diff --git a/tools/code-generation/smithy/cpp-codegen/build.gradle.kts b/tools/code-generation/smithy/cpp-codegen/build.gradle.kts
index cc1faf7bcbf..11a2caa8737 100644
--- a/tools/code-generation/smithy/cpp-codegen/build.gradle.kts
+++ b/tools/code-generation/smithy/cpp-codegen/build.gradle.kts
@@ -43,6 +43,7 @@ tasks.register("generate-smithy-build") {
         val filteredServices: String = project.findProperty("servicesFilter")?.toString() ?: ""
         val filteredServiceList = filteredServices.split(",").map { it.trim() }.filter { it.isNotEmpty() }
         val c2jMapStr: String = project.findProperty("c2jMap")?.toString() ?: ""
+        val namespaceMappings: String = project.findProperty("namespaceMappings")?.toString() ?: ""
 
         fileTree(models).filter { it.isFile }.files.forEach eachFile@{ file ->
             val model = Model.assembler()
@@ -62,6 +63,7 @@ tasks.register("generate-smithy-build") {
                 .withMember("plugins", Node.objectNode()
                     .withMember("smithy-cpp-codegen", Node.objectNodeBuilder()
                         .withMember("c2jMap", Node.from(c2jMapStr))
+                        .withMember("namespaceMappings", Node.from(namespaceMappings))
                         .build()))
                 .build()
             
@@ -76,6 +78,7 @@ tasks.register("generate-smithy-build") {
                     .withMember("plugins", Node.objectNode()
                         .withMember("smithy-cpp-codegen", Node.objectNodeBuilder()
                             .withMember("c2jMap", Node.from(c2jMapStr))
+                            .withMember("namespaceMappings", Node.from(namespaceMappings))
                             .build()))
                     .build()
                 projectionsBuilder.withMember("$c2jName.mock", mockProjectionContents)
@@ -90,6 +93,7 @@ tasks.register("generate-smithy-build") {
                     .withMember("plugins", Node.objectNode()
                         .withMember("smithy-cpp-codegen", Node.objectNodeBuilder()
                             .withMember("c2jMap", Node.from(c2jMapStr))
+                            .withMember("namespaceMappings", Node.from(namespaceMappings))
                             .build()))
                     .build()
                 projectionsBuilder.withMember("s3-crt.2006-03-01", s3CrtProjectionContents)
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/BaseHeaderGenerator.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/BaseHeaderGenerator.java
index ebbb6a235c7..e549174a829 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/BaseHeaderGenerator.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/BaseHeaderGenerator.java
@@ -5,22 +5,24 @@
 package com.amazonaws.util.awsclientsmithygenerator.generators;
 
 import software.amazon.smithy.model.shapes.ServiceShape;
-import com.amazonaws.util.awsclientsmithygenerator.generators.CppWriter;
-import com.amazonaws.util.awsclientsmithygenerator.generators.ServiceNameUtil;
+
 import java.util.List;
 import java.util.Map;
+import java.util.Optional;
 
 public abstract class BaseHeaderGenerator<T> {
     protected final ServiceShape service;
     protected final List<T> operations;
     protected final Map<String, String> serviceMap;
     protected final String smithyServiceName;
+    protected final Map<String, String> namespaceMap;
 
-    public BaseHeaderGenerator(ServiceShape service, List<T> operations, Map<String, String> serviceMap) {
+    public BaseHeaderGenerator(ServiceShape service, List<T> operations, Map<String, String> serviceMap, Map<String, String> namespaceMap) {
         this.service = service;
         this.operations = operations;
         this.serviceMap = serviceMap;
         this.smithyServiceName = ServiceNameUtil.getSmithyServiceName(service, serviceMap);
+        this.namespaceMap = namespaceMap;
     }
 
     protected abstract void writeSpecificIncludes(CppWriter writer, String serviceName, String smithyServiceName);
@@ -47,12 +49,12 @@ private void writeHeader(CppWriter writer) {
 
     private void writeNamespaceOpen(CppWriter writer, String serviceName) {
         writer.writeNamespaceOpen("Aws");
-        writer.writeNamespaceOpen(serviceName);
+        writer.writeNamespaceOpen(Optional.ofNullable(namespaceMap.get(smithyServiceName)).orElse(serviceName));
         writer.write("");
     }
 
     private void writeNamespaceClose(CppWriter writer, String serviceName) {
-        writer.writeNamespaceClose(serviceName);
+        writer.writeNamespaceClose(Optional.ofNullable(namespaceMap.get(smithyServiceName)).orElse(serviceName));
         writer.writeNamespaceClose("Aws");
     }
 }
\ No newline at end of file
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/FeatureParser.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/FeatureParser.java
index 6d76901b024..1fe61b5caf5 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/FeatureParser.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/FeatureParser.java
@@ -9,8 +9,10 @@
 import software.amazon.smithy.model.node.ObjectNode;
 import software.amazon.smithy.model.shapes.*;
 import software.amazon.smithy.aws.traits.ServiceTrait;
+
 import java.util.*;
 import java.util.function.Consumer;
+import java.util.stream.Collectors;
 
 public class FeatureParser<T> {
     private final PluginContext context;
@@ -18,6 +20,7 @@ public class FeatureParser<T> {
     private final List<T> operations;
     private final CppWriterDelegator writerDelegator;
     private final Map<String, String> serviceMap;
+    private final Map<String, String> namespaceMap;
     private final String featureName;
 
     public FeatureParser(PluginContext context, ServiceShape service, List<T> operations, String featureName) {
@@ -40,6 +43,15 @@ public FeatureParser(PluginContext context, ServiceShape service, List<T> operat
                 });
             }
         }
+
+        this.namespaceMap = settings.getMember("namespaceMappings")
+            .map(node -> node.expectStringNode().getValue())
+            .map(jsonStr -> Node.parseJsonWithComments(jsonStr).expectObjectNode())
+            .map(node -> node.getMembers().entrySet().stream()
+                    .collect(Collectors.toMap(
+                            entry -> entry.getKey().getValue(),
+                            entry -> sanitizeServiceAbbreviation(entry.getValue().expectStringNode().getValue()))))
+            .orElse(Map.of());
     }
 
     public void run(Consumer<FeatureParser<T>> generationLogic) {
@@ -64,4 +76,10 @@ public void generateClientHeader(String fileName, Consumer<CppWriter> generator)
     public Map<String, String> getServiceMap() { return serviceMap; }
     public String getServiceName() { return ServiceNameUtil.getServiceName(service); }
     public String getSmithyServiceName() { return ServiceNameUtil.getSmithyServiceName(service, serviceMap); }
-}
\ No newline at end of file
+    public Map<String, String> getNamespaceMap() { return namespaceMap; }
+
+    // In reference to ServiceNameUtil.sanitizeServiceAbbreviation such that we get the same namepsace name as C2J
+    private static String sanitizeServiceAbbreviation(final String serviceAbbreviation) {
+        return serviceAbbreviation.replace(" ", "").replace("-", "").replace("_", "").replace("Amazon", "").replace("AWS", "").replace("/", "");
+    }
+}
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationBaseGenerator.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationBaseGenerator.java
index dd78fce6104..b39a3762dd0 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationBaseGenerator.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationBaseGenerator.java
@@ -16,8 +16,8 @@
 
 public class PaginationBaseGenerator extends BaseHeaderGenerator<OperationData<PaginatedTrait>> {
     
-    public PaginationBaseGenerator(ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, Map<String, String> serviceMap) {
-        super(service, paginatedOps, serviceMap);
+    public PaginationBaseGenerator(ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, Map<String, String> serviceMap, Map<String, String> namespaceMap) {
+        super(service, paginatedOps, serviceMap, namespaceMap);
     }
     
     @Override
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationClientHeaderGenerator.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationClientHeaderGenerator.java
index a18c63b1e28..26f55f089b0 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationClientHeaderGenerator.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationClientHeaderGenerator.java
@@ -16,8 +16,8 @@
 
 public class PaginationClientHeaderGenerator extends BaseHeaderGenerator<OperationData<PaginatedTrait>> {
     
-    public PaginationClientHeaderGenerator(ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, Map<String, String> serviceMap) {
-        super(service, paginatedOps, serviceMap);
+    public PaginationClientHeaderGenerator(ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, Map<String, String> serviceMap, Map<String, String> namespaceMap) {
+        super(service, paginatedOps, serviceMap, namespaceMap);
     }
     
     @Override
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationCodegenPlugin.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationCodegenPlugin.java
index b7e0a468361..8c208604ac2 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationCodegenPlugin.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationCodegenPlugin.java
@@ -60,14 +60,14 @@ public void execute(PluginContext context) {
                 // Generate CRTP pagination (always, even if empty)
                 featureParser.generateClientHeader(
                     serviceName + "PaginationBase.h",
-                    writer -> new PaginationBaseGenerator(featureParser.getService(), featureParser.getOperations(), featureParser.getServiceMap()).render(writer)
+                    writer -> new PaginationBaseGenerator(featureParser.getService(), featureParser.getOperations(), featureParser.getServiceMap(), featureParser.getNamespaceMap()).render(writer)
                 );
                 
                 if (!paginatedOps.isEmpty()) {
                     // Generate client pagination header
                     featureParser.generateClientHeader(
                         serviceName + "ClientPagination.h",
-                        writer -> new PaginationClientHeaderGenerator(featureParser.getService(), featureParser.getOperations(), featureParser.getServiceMap()).render(writer)
+                        writer -> new PaginationClientHeaderGenerator(featureParser.getService(), featureParser.getOperations(), featureParser.getServiceMap(), featureParser.getNamespaceMap()).render(writer)
                     );
                     
                     // Generate pagination traits headers
@@ -75,7 +75,8 @@ public void execute(PluginContext context) {
                         featureParser.getContext(), 
                         featureParser.getService(), 
                         featureParser.getOperations(), 
-                        featureParser.getSmithyServiceName()
+                        featureParser.getSmithyServiceName(),
+                        featureParser.getNamespaceMap()
                     );
                     traitsGenerator.write();
                 }
diff --git a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationTraitsGenerator.java b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationTraitsGenerator.java
index befd6b0bf1f..8c0f1a294ea 100644
--- a/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationTraitsGenerator.java
+++ b/tools/code-generation/smithy/cpp-codegen/smithy-cpp-codegen/src/main/java/com/amazonaws/util/awsclientsmithygenerator/generators/pagination/PaginationTraitsGenerator.java
@@ -13,13 +13,15 @@
 import com.amazonaws.util.awsclientsmithygenerator.generators.ServiceNameUtil;
 import com.amazonaws.util.awsclientsmithygenerator.generators.ShapeUtil;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
 public class PaginationTraitsGenerator extends BaseTraitsGenerator<OperationData<PaginatedTrait>> {
 
     private final List<TokenResolver> resolvers;
+    private final Map<String, String> namespaceMap;
 
-    public PaginationTraitsGenerator(PluginContext context, ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, String smithyServiceName) {
+    public PaginationTraitsGenerator(PluginContext context, ServiceShape service, List<OperationData<PaginatedTrait>> paginatedOps, String smithyServiceName, Map<String, String> namespaceMap) {
         super(context, service, paginatedOps, smithyServiceName);
         this.resolvers = List.of(
             // Pattern A: Nested token
@@ -57,6 +59,7 @@ public void writeLogic(CppWriter writer, String token, OperationShape op) {
                 }
             }
         );
+        this.namespaceMap = namespaceMap;
     }
 
     @Override
@@ -85,7 +88,7 @@ protected void generateOperationContent(CppWriter writer, OperationData<Paginate
         
         // Namespaces
         writer.writeNamespaceOpen("Aws")
-              .writeNamespaceOpen(serviceName)
+              .writeNamespaceOpen(Optional.ofNullable(namespaceMap.get(smithyServiceName)).orElse(serviceName))
               .writeNamespaceOpen("Pagination")
               .write("");
         
@@ -120,7 +123,7 @@ protected void generateOperationContent(CppWriter writer, OperationData<Paginate
         
         writer.write("");
         writer.writeNamespaceClose("Pagination");
-        writer.writeNamespaceClose(serviceName);
+        writer.writeNamespaceClose(Optional.ofNullable(namespaceMap.get(smithyServiceName)).orElse(serviceName));
         writer.writeNamespaceClose("Aws");
     }
 
diff --git a/tools/code-generation/smithy/mapping/smithy-namespace-mapping.json b/tools/code-generation/smithy/mapping/smithy-namespace-mapping.json
new file mode 100644
index 00000000000..25d2902f186
--- /dev/null
+++ b/tools/code-generation/smithy/mapping/smithy-namespace-mapping.json
@@ -0,0 +1,149 @@
+{
+  "monitoring": "CloudWatch",
+  "codepipeline": "CodePipeline",
+  "awstransfer": "AWS Transfer",
+  "sns": "Amazon SNS",
+  "snowball": "Amazon Snowball",
+  "lexv2-runtime": "Lex Runtime V2",
+  "connect-contact-lens": "Amazon Connect Contact Lens",
+  "finspace-data": "FinSpace Data",
+  "servicediscovery": "ServiceDiscovery",
+  "ecr": "Amazon ECR",
+  "firehose": "Firehose",
+  "timestream-write": "Timestream Write",
+  "acm": "ACM",
+  "swf": "Amazon SWF",
+  "imagebuilder": "imagebuilder",
+  "config": "Config Service",
+  "connectcases": "ConnectCases",
+  "sts": "AWS STS",
+  "customer-profiles": "Customer Profiles",
+  "docdb-elastic": "DocDB Elastic",
+  "elasticbeanstalk": "Elastic Beanstalk",
+  "kinesis-video-media": "Kinesis Video Media",
+  "waf-regional": "WAF Regional",
+  "elasticfilesystem": "EFS",
+  "ivs-realtime": "ivsrealtime",
+  "elasticmapreduce": "Amazon EMR",
+  "kafkaconnect": "Kafka Connect",
+  "ecs": "Amazon ECS",
+  "sms-voice": "Pinpoint SMS Voice",
+  "partnercentral-benefits": "PartnerCentral Benefits",
+  "rds": "Amazon RDS",
+  "greengrassv2": "AWS GreengrassV2",
+  "cloudfront": "CloudFront",
+  "marketplace-catalog": "AWS Marketplace Catalog",
+  "ec2": "Amazon EC2",
+  "memorydb": "Amazon MemoryDB",
+  "codeguru-reviewer": "CodeGuruReviewer",
+  "kinesis-video-archived-media": "Kinesis Video Archived Media",
+  "datasync": "DataSync",
+  "email": "Amazon SES",
+  "ssm-sap": "SsmSap",
+  "mediapackage-vod": "MediaPackage Vod",
+  "network-firewall": "Network Firewall",
+  "sso": "SSO",
+  "medialive": "MediaLive",
+  "route53": "Route 53",
+  "kinesis-video-signaling": "Amazon Kinesis Video Signaling Channels",
+  "inspector-scan": "inspector-scan",
+  "mgn": "mgn",
+  "fms": "FMS",
+  "rtbfabric": "RTBFabric",
+  "pi": "AWS PI",
+  "support-app": "SupportApp",
+  "s3outposts": "Amazon S3 Outposts",
+  "cloudtrail": "CloudTrail",
+  "iotdeviceadvisor": "AWSIoTDeviceAdvisor",
+  "sso-oidc": "SSO OIDC",
+  "mturk-requester": "Amazon MTurk",
+  "evs": "EVS",
+  "cloudcontrol": "CloudControlApi",
+  "route53resolver": "Route53Resolver",
+  "elasticloadbalancingv2": "Elastic Load Balancing v2",
+  "resource-groups": "Resource Groups",
+  "mediaconvert": "MediaConvert",
+  "neptune": "Amazon Neptune",
+  "timestream-query": "Timestream Query",
+  "sesv2": "Amazon SES V2",
+  "application-insights": "Application Insights",
+  "mediatailor": "MediaTailor",
+  "synthetics": "Synthetics",
+  "pinpoint-email": "Pinpoint Email",
+  "codedeploy": "CodeDeploy",
+  "kinesisanalytics": "Kinesis Analytics",
+  "ce": "AWS Cost Explorer",
+  "pricing": "AWS Pricing",
+  "ram": "RAM",
+  "ec2-instance-connect": "EC2 Instance Connect",
+  "health": "AWSHealth",
+  "ssm-contacts": "SSM Contacts",
+  "ivschat": "ivschat",
+  "waf": "WAF",
+  "s3": "Amazon S3",
+  "s3-crt": "S3Crt",
+  "entityresolution": "AWSEntityResolution",
+  "lookoutequipment": "LookoutEquipment",
+  "kendra": "kendra",
+  "inspector2": "Inspector2",
+  "healthlake": "HealthLake",
+  "amplify": "Amplify",
+  "dynamodb": "DynamoDB",
+  "states": "AWS SFN",
+  "drs": "drs",
+  "appconfig": "AppConfig",
+  "timestream-influxdb": "Timestream InfluxDB",
+  "acm-pca": "ACM-PCA",
+  "budgets": "AWSBudgets",
+  "networkmanager": "NetworkManager",
+  "comprehendmedical": "ComprehendMedical",
+  "cloudhsmv2": "CloudHSM V2",
+  "ivs": "Amazon IVS",
+  "kms": "KMS",
+  "iam": "IAM",
+  "cloudhsm": "CloudHSM",
+  "wellarchitected": "Well-Architected",
+  "servicecatalog-appregistry": "AppRegistry",
+  "mediapackagev2": "mediapackagev2",
+  "sqs": "Amazon SQS",
+  "fis": "FIS",
+  "ecr-public": "Amazon ECR Public",
+  "shield": "AWS Shield",
+  "kinesis": "Kinesis",
+  "connect": "Amazon Connect",
+  "sagemaker": "SageMaker",
+  "marketplace-agreement": "Agreement Service",
+  "signer": "signer",
+  "ssm-incidents": "SSM Incidents",
+  "neptune-graph": "Neptune Graph",
+  "kinesisvideo": "Kinesis Video",
+  "ssm": "Amazon SSM",
+  "lexv2-models": "Lex Models V2",
+  "dlm": "Amazon DLM",
+  "connectparticipant": "Amazon Connect Participant",
+  "identitystore": "IdentityStore",
+  "kinesisanalyticsv2": "Kinesis Analytics V2",
+  "docdb": "Amazon DocDB",
+  "appsync": "AWSAppSync",
+  "codecommit": "CodeCommit",
+  "ebs": "Amazon EBS",
+  "b2bi": "AWS B2BI",
+  "managedblockchain": "ManagedBlockchain",
+  "mediastore-data": "MediaStore Data",
+  "savingsplans": "AWSSavingsPlans",
+  "organizations": "Organizations",
+  "ds": "Directory Service",
+  "dax": "Amazon DAX",
+  "mediapackage": "MediaPackage",
+  "kafka": "Kafka",
+  "wafv2": "WAFV2",
+  "eks": "Amazon EKS",
+  "mediastore": "MediaStore",
+  "outposts": "Outposts",
+  "sagemaker-metrics": "SageMaker Metrics",
+  "sso-admin": "SSO Admin",
+  "batch": "AWS Batch",
+  "panorama": "Panorama",
+  "finspace": "finspace",
+  "kendra-ranking": "Kendra Ranking"
+}
\ No newline at end of file
diff --git a/tools/scripts/codegen/legacy_c2j_cpp_gen.py b/tools/scripts/codegen/legacy_c2j_cpp_gen.py
index 5812c89217f..321e4c3fa8f 100644
--- a/tools/scripts/codegen/legacy_c2j_cpp_gen.py
+++ b/tools/scripts/codegen/legacy_c2j_cpp_gen.py
@@ -7,6 +7,7 @@
 This is a wrapper on top of legacy CPP client generator written in java from c2j models
 """
 import io
+import json
 import os
 import re
 import shutil
@@ -148,6 +149,8 @@ def generate(self, executor: ProcessPoolExecutor, max_workers: int, args: dict)
         if len(failures):
             return -1
 
+        self._create_smithy_namespace_mapping(self.c2j_models)
+
         print(f"Code generation done, (re)generated {len(done)} packages.")  # Including defaults and partitions
         
         return 0
@@ -359,3 +362,20 @@ def _generate_core_component(self,
         output_zip_file = self.run_generator_once(f"core/{component_name}", run_command, output_filename)
 
         return self.extract_zip(output_zip_file, f"core/{component_name}", output_dir, None)
+
+    def _create_smithy_namespace_mapping(self, c2j_models: dict):
+        mapping = {}
+        for service, model_files in c2j_models.items():
+            full_model_file_path = f"{self.path_to_api_definitions}/{model_files.c2j_model}"
+            with open(full_model_file_path, 'r') as f:
+                model = json.load(f)
+            abbreviation = model.get("metadata", {}).get("serviceAbbreviation")
+            if abbreviation:
+                mapping[service] = abbreviation
+        # add customization for s3-crt
+        mapping["s3-crt"] = "S3Crt"
+        output_path = f"{self.path_to_api_definitions}/../smithy/mapping/smithy-namespace-mapping.json"
+        tmp_path = output_path + ".tmp"
+        with open(tmp_path, 'w') as f:
+            json.dump(mapping, f, indent=2)
+        os.replace(tmp_path, output_path)
diff --git a/tools/scripts/codegen/smithy_cpp_gen.py b/tools/scripts/codegen/smithy_cpp_gen.py
index d315badced8..3ddbfbe43c5 100644
--- a/tools/scripts/codegen/smithy_cpp_gen.py
+++ b/tools/scripts/codegen/smithy_cpp_gen.py
@@ -14,6 +14,7 @@
 
 SMITHY_GENERATOR_LOCATION = "tools/code-generation/smithy/cpp-codegen"
 SMITHY_TO_C2J_MAP_FILE = "tools/code-generation/smithy/cpp-codegen/smithy2c2j_service_map.json"
+SMITHY_NAMPESPACE_MAPPING_FILE = "tools/code-generation/smithy/mapping/smithy-namespace-mapping.json"
 
 
 class SmithyCppGen(object):
@@ -24,6 +25,8 @@ def __init__(self, debug: bool, **kwargs):
         with open(os.path.abspath(SMITHY_TO_C2J_MAP_FILE), 'r') as file:
             self.smithy_c2j_data = json.load(file)
             self.c2j_smithy_data = {value: key for key, value in self.smithy_c2j_data.items()}
+        with open(os.path.abspath(SMITHY_NAMPESPACE_MAPPING_FILE), 'r') as file:
+            self.smithy_namespace_mappings = json.load(file)
 
     def generate(self, clients_to_build: set):
         """Generate Smithy-based code for SDK clients"""
@@ -46,7 +49,8 @@ def _generate_pagination(self, smithy_services: List[str], smithy_c2j_data: str)
             "./gradlew",
             "build",
             "-PservicesFilter=" + ",".join(smithy_services),
-            "-Pc2jMap=" + smithy_c2j_data
+            "-Pc2jMap=" + smithy_c2j_data,
+            "-PnamespaceMappings=" + json.dumps(self.smithy_namespace_mappings)
         ]
         
         try: