diff --git a/builder/amazon/chroot/step_register_ami.go b/builder/amazon/chroot/step_register_ami.go
index 9b83f941e..8523b595a 100644
--- a/builder/amazon/chroot/step_register_ami.go
+++ b/builder/amazon/chroot/step_register_ami.go
@@ -75,9 +75,14 @@ func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
 		registerOpts = buildRegisterOpts(config, image, newMappings)
 	}
 
-	// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
 	if config.AMIEnhancedNetworking {
+		// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
+		// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
 		registerOpts.SriovNetSupport = aws.String("simple")
+
+		// Set EnaSupport to true
+		// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
+		registerOpts.EnaSupport = aws.Bool(true)
 	}
 
 	registerResp, err := ec2conn.RegisterImage(registerOpts)
diff --git a/builder/amazon/common/step_modify_ebs_instance.go b/builder/amazon/common/step_modify_ebs_instance.go
index ab0cd9e6c..59307ea08 100644
--- a/builder/amazon/common/step_modify_ebs_instance.go
+++ b/builder/amazon/common/step_modify_ebs_instance.go
@@ -17,16 +17,32 @@ func (s *StepModifyEBSBackedInstance) Run(state multistep.StateBag) multistep.St
 	instance := state.Get("instance").(*ec2.Instance)
 	ui := state.Get("ui").(packer.Ui)
 
-	// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
 	if s.EnableEnhancedNetworking {
-		ui.Say("Enabling Enhanced Networking...")
+		// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
+		// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
+		ui.Say("Enabling Enhanced Networking (SR-IOV)...")
 		simple := "simple"
-		_, err := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
+		_, err_iov := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
 			InstanceId:      instance.InstanceId,
 			SriovNetSupport: &ec2.AttributeValue{Value: &simple},
 		})
-		if err != nil {
-			err := fmt.Errorf("Error enabling Enhanced Networking on %s: %s", *instance.InstanceId, err)
+		if err_iov != nil {
+			err := fmt.Errorf("Error enabling Enhanced Networking (SR-IOV) on %s: %s", *instance.InstanceId, err_iov)
+			state.Put("error", err)
+			ui.Error(err.Error())
+			return multistep.ActionHalt
+		}
+
+		// Set EnaSupport to true.
+		// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
+		ui.Say("Enabling Enhanced Networking (ENA)...")
+		truthy := true
+		_, err_ena := ec2conn.ModifyInstanceAttribute(&ec2.ModifyInstanceAttributeInput{
+			InstanceId: instance.InstanceId,
+			EnaSupport: &ec2.AttributeBooleanValue{Value: &truthy},
+		})
+		if err_ena != nil {
+			err := fmt.Errorf("Error enabling Enhanced Networking (ENA) on %s: %s", *instance.InstanceId, err_ena)
 			state.Put("error", err)
 			ui.Error(err.Error())
 			return multistep.ActionHalt
diff --git a/builder/amazon/common/step_source_ami_info.go b/builder/amazon/common/step_source_ami_info.go
index b83b31d74..bd03fcdf8 100644
--- a/builder/amazon/common/step_source_ami_info.go
+++ b/builder/amazon/common/step_source_ami_info.go
@@ -101,7 +101,7 @@ func (s *StepSourceAMIInfo) Run(state multistep.StateBag) multistep.StepAction {
 
 	ui.Message(fmt.Sprintf("Found Image ID: %s", *image.ImageId))
 
-	// Enhanced Networking (SriovNetSupport) can only be enabled on HVM AMIs.
+	// Enhanced Networking can only be enabled on HVM AMIs.
 	// See http://goo.gl/icuXh5
 	if s.EnhancedNetworking && *image.VirtualizationType != "hvm" {
 		err := fmt.Errorf("Cannot enable enhanced networking, source AMI '%s' is not HVM", s.SourceAmi)
diff --git a/builder/amazon/ebssurrogate/step_register_ami.go b/builder/amazon/ebssurrogate/step_register_ami.go
index 26dc36bd2..975854b96 100644
--- a/builder/amazon/ebssurrogate/step_register_ami.go
+++ b/builder/amazon/ebssurrogate/step_register_ami.go
@@ -35,9 +35,14 @@ func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
 		BlockDeviceMappings: blockDevices,
 	}
 
-	// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
 	if config.AMIEnhancedNetworking {
+		// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
+		// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
 		registerOpts.SriovNetSupport = aws.String("simple")
+
+		// Set EnaSupport to true
+		// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
+		registerOpts.EnaSupport = aws.Bool(true)
 	}
 
 	registerResp, err := ec2conn.RegisterImage(registerOpts)
diff --git a/builder/amazon/instance/step_register_ami.go b/builder/amazon/instance/step_register_ami.go
index 3f040d77e..c21c618ed 100644
--- a/builder/amazon/instance/step_register_ami.go
+++ b/builder/amazon/instance/step_register_ami.go
@@ -29,9 +29,14 @@ func (s *StepRegisterAMI) Run(state multistep.StateBag) multistep.StepAction {
 		registerOpts.VirtualizationType = aws.String(config.AMIVirtType)
 	}
 
-	// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
 	if config.AMIEnhancedNetworking {
+		// Set SriovNetSupport to "simple". See http://goo.gl/icuXh5
+		// As of February 2017, this applies to C3, C4, D2, I2, R3, and M4 (excluding m4.16xlarge)
 		registerOpts.SriovNetSupport = aws.String("simple")
+
+		// Set EnaSupport to true.
+		// As of February 2017, this applies to C5, I3, P2, R4, X1, and m4.16xlarge
+		registerOpts.EnaSupport = aws.Bool(true)
 	}
 
 	registerResp, err := ec2conn.RegisterImage(registerOpts)
diff --git a/website/source/docs/builders/amazon-chroot.html.md b/website/source/docs/builders/amazon-chroot.html.md
index 1ab369f65..32ae47625 100644
--- a/website/source/docs/builders/amazon-chroot.html.md
+++ b/website/source/docs/builders/amazon-chroot.html.md
@@ -122,7 +122,7 @@ each category, the available configuration keys are alphabetized.
     forces Packer to find an open device automatically.
 
 -   `enhanced_networking` (boolean) - Enable enhanced
-    networking (SriovNetSupport) on HVM-compatible AMIs. If true, add
+    networking (SriovNetSupport and ENA) on HVM-compatible AMIs. If true, add
     `ec2:ModifyInstanceAttribute` to your AWS IAM policy.
 
 -   `force_deregister` (boolean) - Force Packer to first deregister an existing
diff --git a/website/source/docs/builders/amazon-ebs.html.md b/website/source/docs/builders/amazon-ebs.html.md
index 92e72b43e..55941f0a0 100644
--- a/website/source/docs/builders/amazon-ebs.html.md
+++ b/website/source/docs/builders/amazon-ebs.html.md
@@ -161,7 +161,7 @@ builder.
     Default `false`.
 
 -   `enhanced_networking` (boolean) - Enable enhanced
-    networking (SriovNetSupport) on HVM-compatible AMIs. If true, add
+    networking (SriovNetSupport and ENA) on HVM-compatible AMIs. If true, add
     `ec2:ModifyInstanceAttribute` to your AWS IAM policy.
 
 -   `force_deregister` (boolean) - Force Packer to first deregister an existing
diff --git a/website/source/docs/builders/amazon-ebsvolume.html.md b/website/source/docs/builders/amazon-ebsvolume.html.md
index ff9551f8a..ce7cf687c 100644
--- a/website/source/docs/builders/amazon-ebsvolume.html.md
+++ b/website/source/docs/builders/amazon-ebsvolume.html.md
@@ -100,7 +100,7 @@ builder.
     Default `false`.
 
 -   `enhanced_networking` (boolean) - Enable enhanced
-    networking (SriovNetSupport) on HVM-compatible AMIs. If true, add
+    networking (SriovNetSupport and ENA) on HVM-compatible AMIs. If true, add
     `ec2:ModifyInstanceAttribute` to your AWS IAM policy.
 
 -   `iam_instance_profile` (string) - The name of an [IAM instance
diff --git a/website/source/docs/builders/amazon-instance.html.md b/website/source/docs/builders/amazon-instance.html.md
index cf546dac6..3f8a66e10 100644
--- a/website/source/docs/builders/amazon-instance.html.md
+++ b/website/source/docs/builders/amazon-instance.html.md
@@ -185,7 +185,7 @@ builder.
     Default `false`.
 
 -   `enhanced_networking` (boolean) - Enable enhanced
-    networking (SriovNetSupport) on HVM-compatible AMIs. If true, add
+    networking (SriovNetSupport and ENA) on HVM-compatible AMIs. If true, add
     `ec2:ModifyInstanceAttribute` to your AWS IAM policy.
 
 -   `force_deregister` (boolean) - Force Packer to first deregister an existing