diff --git a/clients/client-bedrock-agent-runtime/src/runtimeConfig.ts b/clients/client-bedrock-agent-runtime/src/runtimeConfig.ts
index ddbb92808ad03..30fb3e805ad2e 100644
--- a/clients/client-bedrock-agent-runtime/src/runtimeConfig.ts
+++ b/clients/client-bedrock-agent-runtime/src/runtimeConfig.ts
@@ -36,6 +36,7 @@ export const getRuntimeConfig = (config: BedrockAgentRuntimeClientConfig) => {
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/clients/client-bedrock-agent/src/runtimeConfig.ts b/clients/client-bedrock-agent/src/runtimeConfig.ts
index 7555c1e7fc91f..b9fa3e0630a4c 100644
--- a/clients/client-bedrock-agent/src/runtimeConfig.ts
+++ b/clients/client-bedrock-agent/src/runtimeConfig.ts
@@ -35,6 +35,7 @@ export const getRuntimeConfig = (config: BedrockAgentClientConfig) => {
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/clients/client-bedrock-data-automation-runtime/src/runtimeConfig.ts b/clients/client-bedrock-data-automation-runtime/src/runtimeConfig.ts
index 929f6dd3cf114..405f069cc8ada 100644
--- a/clients/client-bedrock-data-automation-runtime/src/runtimeConfig.ts
+++ b/clients/client-bedrock-data-automation-runtime/src/runtimeConfig.ts
@@ -35,6 +35,7 @@ export const getRuntimeConfig = (config: BedrockDataAutomationRuntimeClientConfi
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/clients/client-bedrock-data-automation/src/runtimeConfig.ts b/clients/client-bedrock-data-automation/src/runtimeConfig.ts
index 652ec92625333..3d56e4e5629ec 100644
--- a/clients/client-bedrock-data-automation/src/runtimeConfig.ts
+++ b/clients/client-bedrock-data-automation/src/runtimeConfig.ts
@@ -35,6 +35,7 @@ export const getRuntimeConfig = (config: BedrockDataAutomationClientConfig) => {
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/clients/client-bedrock-runtime/src/runtimeConfig.ts b/clients/client-bedrock-runtime/src/runtimeConfig.ts
index 9f14dc636b6df..c83c1781df99e 100644
--- a/clients/client-bedrock-runtime/src/runtimeConfig.ts
+++ b/clients/client-bedrock-runtime/src/runtimeConfig.ts
@@ -37,6 +37,7 @@ export const getRuntimeConfig = (config: BedrockRuntimeClientConfig) => {
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/clients/client-bedrock/src/runtimeConfig.ts b/clients/client-bedrock/src/runtimeConfig.ts
index cb8559de64a28..13f2cc233746b 100644
--- a/clients/client-bedrock/src/runtimeConfig.ts
+++ b/clients/client-bedrock/src/runtimeConfig.ts
@@ -35,6 +35,7 @@ export const getRuntimeConfig = (config: BedrockClientConfig) => {
   const loaderConfig = {
     profile: config?.profile,
     logger: clientSharedValues.logger,
+    signingName: "bedrock",
   };
   return {
     ...clientSharedValues,
diff --git a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddAwsRuntimeConfig.java b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddAwsRuntimeConfig.java
index e90dc4dc3e673..2e337f5154690 100644
--- a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddAwsRuntimeConfig.java
+++ b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AddAwsRuntimeConfig.java
@@ -25,6 +25,7 @@
 import java.util.function.Consumer;
 import java.util.logging.Logger;
 import software.amazon.smithy.aws.traits.ServiceTrait;
+import software.amazon.smithy.aws.traits.auth.SigV4Trait;
 import software.amazon.smithy.aws.typescript.codegen.extensions.AwsRegionExtensionConfiguration;
 import software.amazon.smithy.codegen.core.SymbolProvider;
 import software.amazon.smithy.model.Model;
@@ -169,6 +170,10 @@ public void prepareCustomizations(
             writer.openBlock("const loaderConfig = {", "};", () -> {
                 writer.write("profile: config?.profile,");
                 writer.write("logger: clientSharedValues.logger,");
+                ServiceShape service = settings.getService(model);
+                if (isSigningNameNeededInLoaderConfig(service)) {
+                    writer.write("signingName: $S,", service.expectTrait(SigV4Trait.class).getName());
+                }
             });
         }
     }
@@ -275,4 +280,11 @@ private Map<String, Consumer<TypeScriptWriter>> getEndpointConfigWriters(
                 return Collections.emptyMap();
         }
     }
+
+    private static boolean isSigningNameNeededInLoaderConfig(ServiceShape service) {
+        if (isSigV4Service(service)) {
+            return service.expectTrait(SigV4Trait.class).getName().equals("bedrock");
+        }
+        return false;
+    }
 }