diff --git a/PerformanceTests/Sources/PerformanceTestRunner/PerformanceMain.swift b/PerformanceTests/Sources/PerformanceTestRunner/PerformanceMain.swift
index 1bc950139de..7dd310fc3d6 100644
--- a/PerformanceTests/Sources/PerformanceTestRunner/PerformanceMain.swift
+++ b/PerformanceTests/Sources/PerformanceTestRunner/PerformanceMain.swift
@@ -17,8 +17,9 @@ struct PerformanceMain {
         let sdkVersion = ProcessRunner.getSdkVersion()
 
         // Add more tests here
-        let performanceTests = [
-            AWSSTSGetCallerIdentity()
+        let performanceTests: [PerformanceTest] = [
+            AWSSTSGetCallerIdentity(),
+            AWSSTSGetCallerIdentityNIO()
         ]
 
         var results: [PerformanceTestResult] = []
diff --git a/PerformanceTests/Sources/PerformanceTestRunner/Tests/AWSSTSTests.swift b/PerformanceTests/Sources/PerformanceTestRunner/Tests/AWSSTSTests.swift
index 861f074ac74..6cf275ca93b 100644
--- a/PerformanceTests/Sources/PerformanceTestRunner/Tests/AWSSTSTests.swift
+++ b/PerformanceTests/Sources/PerformanceTestRunner/Tests/AWSSTSTests.swift
@@ -7,6 +7,7 @@
 
 import AWSSTS
 import Foundation
+import ClientRuntime
 
 struct AWSSTSGetCallerIdentity: PerformanceTest {
     let name = "sts.getcalleridentity.latency"
@@ -28,3 +29,26 @@ struct AWSSTSGetCallerIdentity: PerformanceTest {
         return Date().timeIntervalSince(start) * 1000  // Convert seconds to milliseconds
     }
 }
+
+struct AWSSTSGetCallerIdentityNIO: PerformanceTest {
+    let name = "sts.getcalleridentity.nio.latency"
+
+    let description = "The total time between initiating a GetCallerIdentity and reading the last byte of the object using NIO HTTP Client."
+
+    let unit = Unit.milliseconds
+
+    let dimensions = [
+        Dimension(name: "OS", value: OperatingSystem.current.rawValue),
+    ]
+
+    let test = getCallerIdentityNIO
+
+    static func getCallerIdentityNIO() async throws -> Double {
+        let start = Date()
+        let nioClient = NIOHTTPClient(httpClientConfiguration: HttpClientConfiguration())
+        let config = try await STSClient.STSClientConfiguration(region: "us-west-2", httpClientEngine: nioClient)
+        let client = STSClient(config: config)
+        _ = try await client.getCallerIdentity(input: .init())
+        return Date().timeIntervalSince(start) * 1000 // Convert seconds to milliseconds
+    }
+}