diff --git a/generated/src/aws-cpp-sdk-dynamodb/source/DynamoDBClient.cpp b/generated/src/aws-cpp-sdk-dynamodb/source/DynamoDBClient.cpp
index da4cef3baa5..2ad46823406 100644
--- a/generated/src/aws-cpp-sdk-dynamodb/source/DynamoDBClient.cpp
+++ b/generated/src/aws-cpp-sdk-dynamodb/source/DynamoDBClient.cpp
@@ -109,6 +109,7 @@ DynamoDBClient::DynamoDBClient(const DynamoDB::DynamoDBClientConfiguration& clie
                            std::shared_ptr<DynamoDBEndpointProviderBase> endpointProvider) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "DynamoDB",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
@@ -123,6 +124,7 @@ DynamoDBClient::DynamoDBClient(const AWSCredentials& credentials,
                            const DynamoDB::DynamoDBClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "DynamoDB",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
@@ -137,6 +139,7 @@ DynamoDBClient::DynamoDBClient(const std::shared_ptr<AWSCredentialsProvider>& cr
                            const DynamoDB::DynamoDBClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "DynamoDB",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
@@ -150,6 +153,7 @@ DynamoDBClient::DynamoDBClient(const std::shared_ptr<AWSCredentialsProvider>& cr
 DynamoDBClient::DynamoDBClient(const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
       GetServiceName(),
+      "DynamoDB",
       Aws::Http::CreateHttpClient(clientConfiguration),
       Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
       Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
@@ -163,6 +167,7 @@ DynamoDBClient::DynamoDBClient(const AWSCredentials& credentials,
                            const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "DynamoDB",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
         Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
@@ -176,6 +181,7 @@ DynamoDBClient::DynamoDBClient(const std::shared_ptr<AWSCredentialsProvider>& cr
                            const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "DynamoDB",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<DynamoDBErrorMarshaller>(ALLOCATION_TAG),
         Aws::MakeShared<DynamoDBEndpointProvider>(ALLOCATION_TAG),
diff --git a/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClient.h b/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClient.h
index b643ee7ac91..0b6d3f3689e 100644
--- a/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClient.h
+++ b/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClient.h
@@ -36,13 +36,19 @@ namespace client
     public:
         static_assert(std::is_base_of<Aws::Client::AWSErrorMarshaller, ErrorMarshallerT>::value, "MarshallerT must be derived from class Aws::Client::AWSErrorMarshaller");
 
-        explicit AwsSmithyClientT(const ServiceClientConfigurationT& clientConfig, const Aws::String& serviceName,
+        explicit AwsSmithyClientT(const ServiceClientConfigurationT& clientConfig,
+            const Aws::String& serviceName,
+            const Aws::String& serviceUserAgentName,
             const std::shared_ptr<Aws::Http::HttpClient>& httpClient,
             const std::shared_ptr<Aws::Client::AWSErrorMarshaller>& errorMarshaller,
             const std::shared_ptr<EndpointProviderT> endpointProvider,
             const std::shared_ptr<ServiceAuthSchemeResolverT>& authSchemeResolver,
             const Aws::UnorderedMap<Aws::String, AuthSchemesVariantT>& authSchemes)
-            : AwsSmithyClientBase(Aws::MakeUnique<ServiceClientConfigurationT>(ServiceNameT, clientConfig), serviceName, httpClient, errorMarshaller),
+            : AwsSmithyClientBase(Aws::MakeUnique<ServiceClientConfigurationT>(ServiceNameT, clientConfig),
+                serviceName,
+                serviceUserAgentName,
+                httpClient,
+                errorMarshaller),
               m_clientConfiguration(*static_cast<ServiceClientConfigurationT*>(AwsSmithyClientBase::m_clientConfig.get())),
               m_endpointProvider(endpointProvider),
               m_authSchemeResolver(authSchemeResolver),
@@ -57,6 +63,7 @@ namespace client
             AwsSmithyClientBase(other,
               Aws::MakeUnique<ServiceClientConfigurationT>(ServiceNameT, other.m_clientConfiguration),
               ServiceNameT,
+              other.m_serviceUserAgentName,
               Aws::Http::CreateHttpClient(other.m_clientConfiguration),
               Aws::MakeShared<ErrorMarshallerT>(ServiceNameT)),
             m_clientConfiguration{*static_cast<ServiceClientConfigurationT*>(m_clientConfig.get())},
diff --git a/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClientBase.h b/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClientBase.h
index 3b6ce2b1623..ffd62f99e56 100644
--- a/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClientBase.h
+++ b/src/aws-cpp-sdk-core/include/smithy/client/AwsSmithyClientBase.h
@@ -86,10 +86,12 @@ namespace client
 
         AwsSmithyClientBase(Aws::UniquePtr<Aws::Client::ClientConfiguration>&& clientConfig,
                             Aws::String serviceName,
+                            Aws::String serviceUserAgentName,
                             std::shared_ptr<Aws::Http::HttpClient> httpClient,
                             std::shared_ptr<Aws::Client::AWSErrorMarshaller> errorMarshaller) :
           m_clientConfig(std::move(clientConfig)),
           m_serviceName(std::move(serviceName)),
+          m_serviceUserAgentName(std::move(serviceUserAgentName)),
           m_httpClient(std::move(httpClient)),
           m_errorMarshaller(std::move(errorMarshaller)),
           m_interceptors{Aws::MakeShared<ChecksumInterceptor>("AwsSmithyClientBase")}
@@ -100,10 +102,12 @@ namespace client
         AwsSmithyClientBase(const AwsSmithyClientBase& other,
                             Aws::UniquePtr<Aws::Client::ClientConfiguration>&& clientConfig,
                             Aws::String serviceName,
+                            Aws::String serviceUserAgentName,
                             std::shared_ptr<Aws::Http::HttpClient> httpClient,
                             std::shared_ptr<Aws::Client::AWSErrorMarshaller> errorMarshaller) :
           m_clientConfig(std::move(clientConfig)),
           m_serviceName(std::move(serviceName)),
+          m_serviceUserAgentName(std::move(serviceUserAgentName)),
           m_httpClient(std::move(httpClient)),
           m_errorMarshaller(std::move(errorMarshaller)),
           m_interceptors{Aws::MakeShared<ChecksumInterceptor>("AwsSmithyClientBase")}
@@ -180,6 +184,7 @@ namespace client
 
         std::shared_ptr<Aws::Client::ClientConfiguration> m_clientConfig;
         Aws::String m_serviceName;
+        Aws::String m_serviceUserAgentName;
 
         std::shared_ptr<Aws::Http::HttpClient> m_httpClient;
         std::shared_ptr<Aws::Client::AWSErrorMarshaller> m_errorMarshaller;
diff --git a/src/aws-cpp-sdk-core/source/smithy/client/AwsSmithyClientBase.cpp b/src/aws-cpp-sdk-core/source/smithy/client/AwsSmithyClientBase.cpp
index 5672d18c40f..7b7f249fa21 100644
--- a/src/aws-cpp-sdk-core/source/smithy/client/AwsSmithyClientBase.cpp
+++ b/src/aws-cpp-sdk-core/source/smithy/client/AwsSmithyClientBase.cpp
@@ -62,7 +62,7 @@ void AwsSmithyClientBase::baseInit() {
     m_interceptors.emplace_back(Aws::MakeShared<UserAgentInterceptor>(AWS_SMITHY_CLIENT_LOG,
                                                                       *m_clientConfig,
                                                                       m_clientConfig->retryStrategy->GetStrategyName(),
-                                                                      m_serviceName));
+                                                                      m_serviceUserAgentName));
   }
 }
 
@@ -76,7 +76,7 @@ void AwsSmithyClientBase::baseCopyInit() {
     m_interceptors.emplace_back(Aws::MakeShared<UserAgentInterceptor>(AWS_SMITHY_CLIENT_LOG,
                                                                       *m_clientConfig,
                                                                       m_clientConfig->retryStrategy->GetStrategyName(),
-                                                                      m_serviceName));
+                                                                      m_serviceUserAgentName));
   }
 }
 
diff --git a/tests/aws-cpp-sdk-core-tests/smithy/client/SmithyClientTest.cpp b/tests/aws-cpp-sdk-core-tests/smithy/client/SmithyClientTest.cpp
index 94296efb44a..a3d1c258aa1 100644
--- a/tests/aws-cpp-sdk-core-tests/smithy/client/SmithyClientTest.cpp
+++ b/tests/aws-cpp-sdk-core-tests/smithy/client/SmithyClientTest.cpp
@@ -186,6 +186,7 @@ class TestClient : public MySmithyClient
             MySmithyClient(
                 clientConfig,
                 serviceName,
+                "ServiceUserAgentName",
                 httpClient,
                 errorMarshaller,
                 endpointProvider,
@@ -408,6 +409,7 @@ class SampleClient: public smithy::client::AwsSmithyClientT<SampleServiceName,
 public:
   SampleClient(): AwsSmithyClientT(SampleConfiguration{},
     SampleServiceName,
+    "SampleServiceUserAgentName",
     Aws::MakeShared<MockHttpClient>(SampleServiceName),
     Aws::MakeShared<Aws::Client::JsonErrorMarshaller>(SampleServiceName),
     Aws::MakeShared<SampleEndpointProvider>(SampleServiceName),
diff --git a/tests/aws-cpp-sdk-dynamodb-unit-tests/DynamoDBUnitTests.cpp b/tests/aws-cpp-sdk-dynamodb-unit-tests/DynamoDBUnitTests.cpp
index 43f4e36908f..1ffa3770a68 100644
--- a/tests/aws-cpp-sdk-dynamodb-unit-tests/DynamoDBUnitTests.cpp
+++ b/tests/aws-cpp-sdk-dynamodb-unit-tests/DynamoDBUnitTests.cpp
@@ -309,7 +309,7 @@ TEST_F(DynamoDBUnitTest, ListTablesShouldHaveCorrectUserAgent)
   EXPECT_TRUE(sdkMetadata != userAgentParsed.end());
   auto uaMetadata = std::find_if(userAgentParsed.begin(), userAgentParsed.end(), [](const Aws::String & value) { return value.find("ua/") != Aws::String::npos; });
   EXPECT_TRUE(uaMetadata != userAgentParsed.end());
-  auto apiMetadata = std::find_if(userAgentParsed.begin(), userAgentParsed.end(), [](const Aws::String & value) { return value.find("api/dynamodb") != Aws::String::npos; });
+  auto apiMetadata = std::find_if(userAgentParsed.begin(), userAgentParsed.end(), [](const Aws::String & value) { return value.find("api/DynamoDB") != Aws::String::npos; });
   EXPECT_TRUE(apiMetadata != userAgentParsed.end());
   auto osMetadata = std::find_if(userAgentParsed.begin(), userAgentParsed.end(), [](const Aws::String & value) { return value.find("os/") != Aws::String::npos; });
   EXPECT_TRUE(osMetadata != userAgentParsed.end());
diff --git a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientSourceInit.vm b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientSourceInit.vm
index 439256ea5ce..2137f5dc5e3 100644
--- a/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientSourceInit.vm
+++ b/tools/code-generation/generator/src/main/resources/com/amazonaws/util/awsclientgenerator/velocity/cpp/smithy/SmithyClientSourceInit.vm
@@ -3,6 +3,7 @@ ${className}::${className}(const ${clientConfiguration}& clientConfiguration,
                            std::shared_ptr<${metadata.classNamePrefix}EndpointProviderBase> endpointProvider) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "${metadata.serviceId}",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),
@@ -19,6 +20,7 @@ ${className}::${className}(const AWSCredentials& credentials,
                            const ${clientConfiguration}& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "${metadata.serviceId}",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),
@@ -35,6 +37,7 @@ ${className}::${className}(const std::shared_ptr<AWSCredentialsProvider>& creden
                            const ${clientConfiguration}& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "${metadata.serviceId}",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
         endpointProvider ? endpointProvider : Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),
@@ -50,6 +53,7 @@ ${className}::${className}(const std::shared_ptr<AWSCredentialsProvider>& creden
 ${className}::${className}(const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
       GetServiceName(),
+      "${metadata.serviceId}",
       Aws::Http::CreateHttpClient(clientConfiguration),
       Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
       Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),
@@ -65,6 +69,7 @@ ${className}::${className}(const AWSCredentials& credentials,
                            const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "${metadata.serviceId}",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
         Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),
@@ -80,6 +85,7 @@ ${className}::${className}(const std::shared_ptr<AWSCredentialsProvider>& creden
                            const Client::ClientConfiguration& clientConfiguration) :
     AwsSmithyClientT(clientConfiguration,
         GetServiceName(),
+        "${metadata.serviceId}",
         Aws::Http::CreateHttpClient(clientConfiguration),
         Aws::MakeShared<${metadata.classNamePrefix}ErrorMarshaller>(ALLOCATION_TAG),
         Aws::MakeShared<${metadata.classNamePrefix}EndpointProvider>(ALLOCATION_TAG),