diff --git a/modules/computation/README.md b/modules/computation/README.md
index 719b878..adf3bc8 100644
--- a/modules/computation/README.md
+++ b/modules/computation/README.md
@@ -16,11 +16,12 @@ To read more, see [the Metaflow docs](https://docs.metaflow.org/metaflow-on-aws/
 | <a name="input_compute_environment_additional_security_group_ids"></a> [compute\_environment\_additional\_security\_group\_ids](#input\_compute\_environment\_additional\_security\_group\_ids) | Additional security group ids to apply to the Batch Compute environment | `list(string)` | `[]` | no |
 | <a name="input_compute_environment_allocation_strategy"></a> [compute\_environment\_allocation\_strategy](#input\_compute\_environment\_allocation\_strategy) | Allocation strategy for Batch Compute environment (BEST\_FIT, BEST\_FIT\_PROGRESSIVE, SPOT\_CAPACITY\_OPTIMIZED) | `string` | `"BEST_FIT"` | no |
 | <a name="input_compute_environment_desired_vcpus"></a> [compute\_environment\_desired\_vcpus](#input\_compute\_environment\_desired\_vcpus) | Desired Starting VCPUs for Batch Compute Environment [0-16] for EC2 Batch Compute Environment (ignored for Fargate) | `number` | n/a | yes |
-| <a name="input_compute_environment_egress_cidr_blocks"></a> [compute\_environment\_egress\_cidr\_blocks](#input\_compute\_environment\_egress\_cidr\_blocks) | CIDR blocks to which egress is allowed from the Batch Compute environment's security group | `list(string)` | <pre>[<br>  "0.0.0.0/0"<br>]</pre> | no |
+| <a name="input_compute_environment_egress_cidr_blocks"></a> [compute\_environment\_egress\_cidr\_blocks](#input\_compute\_environment\_egress\_cidr\_blocks) | CIDR blocks to which egress is allowed from the Batch Compute environment's security group | `list(string)` | <pre>[<br/>  "0.0.0.0/0"<br/>]</pre> | no |
 | <a name="input_compute_environment_instance_types"></a> [compute\_environment\_instance\_types](#input\_compute\_environment\_instance\_types) | The instance types for the compute environment as a comma-separated list | `list(string)` | n/a | yes |
 | <a name="input_compute_environment_max_vcpus"></a> [compute\_environment\_max\_vcpus](#input\_compute\_environment\_max\_vcpus) | Maximum VCPUs for Batch Compute Environment [16-96] | `number` | n/a | yes |
 | <a name="input_compute_environment_min_vcpus"></a> [compute\_environment\_min\_vcpus](#input\_compute\_environment\_min\_vcpus) | Minimum VCPUs for Batch Compute Environment [0-16] for EC2 Batch Compute Environment (ignored for Fargate) | `number` | n/a | yes |
 | <a name="input_iam_partition"></a> [iam\_partition](#input\_iam\_partition) | IAM Partition (Select aws-us-gov for AWS GovCloud, otherwise leave as is) | `string` | `"aws"` | no |
+| <a name="input_launch_template_custom_user_data"></a> [launch\_template\_custom\_user\_data](#input\_launch\_template\_custom\_user\_data) | Custom user data in MIME multi-part archive format for the launch template. Refer to the AWS Batch user guide for examples at https://docs.aws.amazon.com/batch/latest/userguide/launch-templates.html#lt-user-data | `string` | `null` | no |
 | <a name="input_launch_template_http_endpoint"></a> [launch\_template\_http\_endpoint](#input\_launch\_template\_http\_endpoint) | Whether the metadata service is available. Can be 'enabled' or 'disabled' | `string` | `"enabled"` | no |
 | <a name="input_launch_template_http_put_response_hop_limit"></a> [launch\_template\_http\_put\_response\_hop\_limit](#input\_launch\_template\_http\_put\_response\_hop\_limit) | The desired HTTP PUT response hop limit for instance metadata requests. Can be an integer from 1 to 64 | `number` | `2` | no |
 | <a name="input_launch_template_http_tokens"></a> [launch\_template\_http\_tokens](#input\_launch\_template\_http\_tokens) | Whether or not the metadata service requires session tokens, also referred to as Instance Metadata Service Version 2 (IMDSv2). Can be 'optional' or 'required' | `string` | `"optional"` | no |
diff --git a/modules/computation/ec2.tf b/modules/computation/ec2.tf
index ef40aa4..4304d23 100644
--- a/modules/computation/ec2.tf
+++ b/modules/computation/ec2.tf
@@ -34,6 +34,12 @@ resource "aws_launch_template" "cpu" {
     http_put_response_hop_limit = var.launch_template_http_put_response_hop_limit
   }
 
+  # Base64 encode user data for the launch template if it is defined. 
+  # User data must be in MIME multi-part archive format. 
+  # Refer to the AWS Batch user guide for examples. 
+  # https://docs.aws.amazon.com/batch/latest/userguide/launch-templates.html#lt-user-data
+  user_data = var.launch_template_custom_user_data != null ? base64encode(var.launch_template_custom_user_data ) : null
+
   tags = var.standard_tags
 }
 
diff --git a/modules/computation/variables.tf b/modules/computation/variables.tf
index 92d11ba..645be7f 100644
--- a/modules/computation/variables.tf
+++ b/modules/computation/variables.tf
@@ -102,3 +102,10 @@ variable "launch_template_image_id" {
   nullable    = true
   default     = null
 }
+
+variable "launch_template_custom_user_data" {
+  type        = string
+  description = "Custom user data in MIME multi-part archive format for the launch template. Refer to the AWS Batch user guide for examples at https://docs.aws.amazon.com/batch/latest/userguide/launch-templates.html#lt-user-data"
+  nullable    = true
+  default     = null
+}