diff --git a/CHANGES.md b/CHANGES.md
index 56ba94cf..f4bb3d0f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,10 @@ Notable changes between versions.
 
 ## Latest
 
+#### AWS
+
+* Add `disk_iops` variable for EBS volume IOPS ([#314](https://github.com/poseidon/typhoon/pull/314))
+
 ## v1.12.1
 
 * Kubernetes [v1.12.1](https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG-1.12.md#v1121)
diff --git a/aws/container-linux/kubernetes/controllers.tf b/aws/container-linux/kubernetes/controllers.tf
index fd736d29..443ef949 100644
--- a/aws/container-linux/kubernetes/controllers.tf
+++ b/aws/container-linux/kubernetes/controllers.tf
@@ -30,6 +30,7 @@ resource "aws_instance" "controllers" {
   root_block_device {
     volume_type = "${var.disk_type}"
     volume_size = "${var.disk_size}"
+    iops        = "${var.disk_iops}"
   }
 
   # network
diff --git a/aws/container-linux/kubernetes/variables.tf b/aws/container-linux/kubernetes/variables.tf
index a7d4f856..73db5c70 100644
--- a/aws/container-linux/kubernetes/variables.tf
+++ b/aws/container-linux/kubernetes/variables.tf
@@ -59,6 +59,12 @@ variable "disk_type" {
   description = "Type of the EBS volume (e.g. standard, gp2, io1)"
 }
 
+variable "disk_iops" {
+  type        = "string"
+  default     = "0"
+  description = "IOPS of the EBS volume (e.g. 100)"
+}
+
 variable "worker_price" {
   type        = "string"
   default     = ""
diff --git a/aws/container-linux/kubernetes/workers/variables.tf b/aws/container-linux/kubernetes/workers/variables.tf
index 06839256..1c91eb60 100644
--- a/aws/container-linux/kubernetes/workers/variables.tf
+++ b/aws/container-linux/kubernetes/workers/variables.tf
@@ -52,6 +52,12 @@ variable "disk_type" {
   description = "Type of the EBS volume (e.g. standard, gp2, io1)"
 }
 
+variable "disk_iops" {
+  type        = "string"
+  default     = "0"
+  description = "IOPS of the EBS volume (required for io1)"
+}
+
 variable "spot_price" {
   type        = "string"
   default     = ""
diff --git a/aws/container-linux/kubernetes/workers/workers.tf b/aws/container-linux/kubernetes/workers/workers.tf
index 082a8ec2..ba990508 100644
--- a/aws/container-linux/kubernetes/workers/workers.tf
+++ b/aws/container-linux/kubernetes/workers/workers.tf
@@ -52,6 +52,7 @@ resource "aws_launch_configuration" "worker" {
   root_block_device {
     volume_type = "${var.disk_type}"
     volume_size = "${var.disk_size}"
+    iops        = "${var.disk_iops}"
   }
 
   # network
diff --git a/aws/fedora-atomic/kubernetes/controllers.tf b/aws/fedora-atomic/kubernetes/controllers.tf
index f71b5219..0ed35e05 100644
--- a/aws/fedora-atomic/kubernetes/controllers.tf
+++ b/aws/fedora-atomic/kubernetes/controllers.tf
@@ -30,6 +30,7 @@ resource "aws_instance" "controllers" {
   root_block_device {
     volume_type = "${var.disk_type}"
     volume_size = "${var.disk_size}"
+    iops        = "${var.disk_iops}"
   }
 
   # network
diff --git a/aws/fedora-atomic/kubernetes/variables.tf b/aws/fedora-atomic/kubernetes/variables.tf
index 6747e38c..897ab3f8 100644
--- a/aws/fedora-atomic/kubernetes/variables.tf
+++ b/aws/fedora-atomic/kubernetes/variables.tf
@@ -53,6 +53,12 @@ variable "disk_type" {
   description = "Type of the EBS volume (e.g. standard, gp2, io1)"
 }
 
+variable "disk_iops" {
+  type        = "string"
+  default     = "0"
+  description = "IOPS of the EBS volume (e.g. 100)"
+}
+
 variable "worker_price" {
   type        = "string"
   default     = ""
diff --git a/aws/fedora-atomic/kubernetes/workers/variables.tf b/aws/fedora-atomic/kubernetes/workers/variables.tf
index a38c1060..69b74af4 100644
--- a/aws/fedora-atomic/kubernetes/workers/variables.tf
+++ b/aws/fedora-atomic/kubernetes/workers/variables.tf
@@ -46,6 +46,12 @@ variable "disk_type" {
   description = "Type of the EBS volume (e.g. standard, gp2, io1)"
 }
 
+variable "disk_iops" {
+  type        = "string"
+  default     = "0"
+  description = "IOPS of the EBS volume (required for io1)"
+}
+
 variable "spot_price" {
   type        = "string"
   default     = ""
diff --git a/aws/fedora-atomic/kubernetes/workers/workers.tf b/aws/fedora-atomic/kubernetes/workers/workers.tf
index b139081a..77832f7e 100644
--- a/aws/fedora-atomic/kubernetes/workers/workers.tf
+++ b/aws/fedora-atomic/kubernetes/workers/workers.tf
@@ -52,6 +52,7 @@ resource "aws_launch_configuration" "worker" {
   root_block_device {
     volume_type = "${var.disk_type}"
     volume_size = "${var.disk_size}"
+    iops        = "${var.disk_iops}"
   }
 
   # network
diff --git a/docs/atomic/aws.md b/docs/atomic/aws.md
index 337ea20f..33171842 100644
--- a/docs/atomic/aws.md
+++ b/docs/atomic/aws.md
@@ -227,6 +227,7 @@ Reference the DNS zone id with `"${aws_route53_zone.zone-for-clusters.zone_id}"`
 | worker_type | EC2 instance type for workers | "t2.small" | See below |
 | disk_size | Size of the EBS volume in GB | "40" | "100" |
 | disk_type | Type of the EBS volume | "gp2" | standard, gp2, io1 |
+| disk_iops | IOPS of the EBS volume | "0" (i.e. auto) | "400" |
 | worker_price | Spot price in USD for workers. Leave as default empty string for regular on-demand instances | "" | "0.10" |
 | networking | Choice of networking provider | "calico" | "calico" or "flannel" |
 | network_mtu | CNI interface MTU (calico only) | 1480 | 8981 |
diff --git a/docs/cl/aws.md b/docs/cl/aws.md
index 8f5b35ef..18d75b5a 100644
--- a/docs/cl/aws.md
+++ b/docs/cl/aws.md
@@ -244,6 +244,7 @@ Reference the DNS zone id with `"${aws_route53_zone.zone-for-clusters.zone_id}"`
 | os_image | AMI channel for a Container Linux derivative | coreos-stable | coreos-stable, coreos-beta, coreos-alpha, flatcar-stable, flatcar-beta, flatcar-alpha |
 | disk_size | Size of the EBS volume in GB | "40" | "100" |
 | disk_type | Type of the EBS volume | "gp2" | standard, gp2, io1 |
+| disk_iops | IOPS of the EBS volume | "0" (i.e. auto) | "400" |
 | worker_price | Spot price in USD for workers. Leave as default empty string for regular on-demand instances | "" | "0.10" |
 | controller_clc_snippets | Controller Container Linux Config snippets | [] | [example](/advanced/customization/) |
 | worker_clc_snippets | Worker Container Linux Config snippets | [] | [example](/advanced/customization/) |