diff --git a/.changes/next-release/bugfix-NettyNIOHTTPClient-99565b4.json b/.changes/next-release/bugfix-NettyNIOHTTPClient-99565b4.json
new file mode 100644
index 000000000000..1143f66271f2
--- /dev/null
+++ b/.changes/next-release/bugfix-NettyNIOHTTPClient-99565b4.json
@@ -0,0 +1,5 @@
+{
+    "category": "Netty NIO HTTP Client", 
+    "type": "bugfix", 
+    "description": "Fix a bug where SNI was not enabled in Netty NIO Async Client for TLS and caused the requests to fail of handshake_failure in some services. See [#1171](https://github.com/aws/aws-sdk-java-v2/issues/1171)"
+}
diff --git a/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/NettyNioAsyncHttpClient.java b/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/NettyNioAsyncHttpClient.java
index 01f1a70c3c05..dd2e77334f54 100644
--- a/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/NettyNioAsyncHttpClient.java
+++ b/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/NettyNioAsyncHttpClient.java
@@ -193,7 +193,7 @@ protected ChannelPool newPool(URI key) {
 
                 AtomicReference<ChannelPool> channelPoolRef = new AtomicReference<>();
                 ChannelPipelineInitializer handler =
-                    new ChannelPipelineInitializer(protocol, sslContext, maxStreams, channelPoolRef, configuration);
+                    new ChannelPipelineInitializer(protocol, sslContext, maxStreams, channelPoolRef, configuration, key);
                 channelPoolRef.set(createChannelPool(bootstrap, handler));
                 return channelPoolRef.get();
             }
diff --git a/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/internal/ChannelPipelineInitializer.java b/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/internal/ChannelPipelineInitializer.java
index 95c7ebc320be..399471aacd04 100644
--- a/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/internal/ChannelPipelineInitializer.java
+++ b/http-clients/netty-nio-client/src/main/java/software/amazon/awssdk/http/nio/netty/internal/ChannelPipelineInitializer.java
@@ -30,8 +30,12 @@
 import io.netty.handler.logging.LogLevel;
 import io.netty.handler.logging.LoggingHandler;
 import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslHandler;
+import java.net.URI;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.atomic.AtomicReference;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.SSLParameters;
 import software.amazon.awssdk.annotations.SdkInternalApi;
 import software.amazon.awssdk.http.Protocol;
 import software.amazon.awssdk.http.nio.netty.internal.http2.Http2SettingsFrameHandler;
@@ -46,17 +50,20 @@ public final class ChannelPipelineInitializer extends AbstractChannelPoolHandler
     private final long clientMaxStreams;
     private final AtomicReference<ChannelPool> channelPoolRef;
     private final NettyConfiguration configuration;
+    private final URI poolKey;
 
     public ChannelPipelineInitializer(Protocol protocol,
                                       SslContext sslCtx,
                                       long clientMaxStreams,
                                       AtomicReference<ChannelPool> channelPoolRef,
-                                      NettyConfiguration configuration) {
+                                      NettyConfiguration configuration,
+                                      URI poolKey) {
         this.protocol = protocol;
         this.sslCtx = sslCtx;
         this.clientMaxStreams = clientMaxStreams;
         this.channelPoolRef = channelPoolRef;
         this.configuration = configuration;
+        this.poolKey = poolKey;
     }
 
     @Override
@@ -64,7 +71,13 @@ public void channelCreated(Channel ch) {
         ch.attr(PROTOCOL_FUTURE).set(new CompletableFuture<>());
         ChannelPipeline pipeline = ch.pipeline();
         if (sslCtx != null) {
-            pipeline.addLast(sslCtx.newHandler(ch.alloc()));
+
+            // Need to provide host and port to enable SNI
+            // https://github.com/netty/netty/issues/3801#issuecomment-104274440
+            SslHandler sslHandler = sslCtx.newHandler(ch.alloc(), poolKey.getHost(), poolKey.getPort());
+            configureSslEngine(sslHandler.engine());
+
+            pipeline.addLast(sslHandler);
             pipeline.addLast(SslCloseCompletionEventHandler.getInstance());
         }
 
@@ -87,6 +100,20 @@ public void channelCreated(Channel ch) {
         pipeline.addLast(new LoggingHandler(LogLevel.DEBUG));
     }
 
+    /**
+     * Enable HostName verification.
+     *
+     * See https://netty.io/4.0/api/io/netty/handler/ssl/SslContext.html#newHandler-io.netty.buffer.ByteBufAllocator-java.lang
+     * .String-int-
+     *
+     * @param sslEngine the sslEngine to configure
+     */
+    private void configureSslEngine(SSLEngine sslEngine) {
+        SSLParameters sslParameters = sslEngine.getSSLParameters();
+        sslParameters.setEndpointIdentificationAlgorithm("HTTPS");
+        sslEngine.setSSLParameters(sslParameters);
+    }
+
     private void configureHttp2(Channel ch, ChannelPipeline pipeline) {
         ForkedHttp2MultiplexCodecBuilder codecBuilder = ForkedHttp2MultiplexCodecBuilder
             .forClient(new NoOpChannelInitializer())
diff --git a/services/pinpoint/src/it/java/software/amazon/awssdk/services/pinpoint/PinpointIntegTest.java b/services/pinpoint/src/it/java/software/amazon/awssdk/services/pinpoint/PinpointIntegTest.java
new file mode 100644
index 000000000000..d8b4b65bcad0
--- /dev/null
+++ b/services/pinpoint/src/it/java/software/amazon/awssdk/services/pinpoint/PinpointIntegTest.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License").
+ * You may not use this file except in compliance with the License.
+ * A copy of the License is located at
+ *
+ *  http://aws.amazon.com/apache2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed
+ * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing
+ * permissions and limitations under the License.
+ */
+
+package software.amazon.awssdk.services.pinpoint;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import software.amazon.awssdk.regions.Region;
+import software.amazon.awssdk.testutils.service.AwsTestBase;
+import software.amazon.awssdk.utils.builder.SdkBuilder;
+
+public class PinpointIntegTest extends AwsTestBase {
+
+    protected static PinpointAsyncClient pinpointAsyncClient;
+
+    @BeforeClass
+    public static void setup() {
+        pinpointAsyncClient = PinpointAsyncClient.builder()
+                                                 .region(Region.US_WEST_2)
+                                                 .credentialsProvider(CREDENTIALS_PROVIDER_CHAIN)
+                                                 .build();
+    }
+
+    @Test
+    public void getApps() {
+        assertThat(pinpointAsyncClient.getApps(SdkBuilder::build).join()).isNotNull();
+    }
+}