diff --git a/README.md b/README.md
index d87f759e609..a5cd988f87f 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ In order to deploy both the stacks the user needs to provide a set of required a
 | account (Optional)                | string  | User provided aws account                                                                                                                                                                                                                                                                        |
 | dataNodeStorage (Optional)        | string  | User provided ebs block storage size, defaults to 100Gb                                                                                                                                                                                                                                          |
 | mlNodeStorage (Optional)          | string  | User provided ebs block storage size, defaults to 100Gb                                                                                                                                                                                                                                          |
+| jvmHeapSize (Optional)            | integer | User provided JVM heap memory size (integer) in Gb, defaults to 1Gb, e.g. `--context jvmHeapSize=2` to set heap to 2Gb                                                                                                                                                                           |
+
 
 
 * Before starting this step, ensure that your AWS CLI is correctly configured with access credentials.
diff --git a/lib/infra/infra-stack.ts b/lib/infra/infra-stack.ts
index 1d7eca2a970..74a05fc34a3 100644
--- a/lib/infra/infra-stack.ts
+++ b/lib/infra/infra-stack.ts
@@ -55,6 +55,7 @@ export interface infraProps extends StackProps{
     readonly mlNodeStorage: number,
     readonly jvmSysPropsString?: string,
     readonly additionalConfig?: string,
+    readonly jvmHeapSize?: number,
 }
 
 export class InfraStack extends Stack {
@@ -468,6 +469,18 @@ export class InfraStack extends Stack {
       }));
     }
 
+    // Check if JVM Heap Memory is set. Default is 1G in the jvm.options file
+    // @ts-ignore
+    if (props.jvmHeapSize > 1) {
+      const minHeap = `-Xms${props.jvmHeapSize}g`;
+      const maxHeap = `-Xmx${props.jvmHeapSize}g`;
+      cfnInitConfig.push(InitCommand.shellCommand(`set -ex; cd opensearch; sed -i -e "s/^-Xms[0-9a-z]*$/${minHeap}/g" config/jvm.options;
+      sed -i -e "s/^-Xmx[0-9a-z]*$/${maxHeap}/g" config/jvm.options;`, {
+        cwd: '/home/ec2-user',
+        ignoreErrors: false,
+      }));
+    }
+
     // @ts-ignore
     if (props.additionalConfig.toString() !== 'undefined') {
       // @ts-ignore
diff --git a/lib/os-cluster-entrypoint.ts b/lib/os-cluster-entrypoint.ts
index 0d508c5e975..93c51c6d4c9 100644
--- a/lib/os-cluster-entrypoint.ts
+++ b/lib/os-cluster-entrypoint.ts
@@ -37,6 +37,7 @@ export class OsClusterEntrypoint {
       let dataNodeStorage: number;
       let mlNodeStorage: number;
       let ymlConfig: string = 'undefined';
+      let jvmHeapSize: number = 1;
 
       const vpcId: string = scope.node.tryGetContext('vpcId');
       const securityGroupId = scope.node.tryGetContext('securityGroupId');
@@ -148,6 +149,14 @@ export class OsClusterEntrypoint {
 
       const suffix = `${scope.node.tryGetContext('suffix')}`;
 
+      const heapSize = `${scope.node.tryGetContext('jvmHeapSize')}`;
+      if (heapSize !== 'undefined') {
+        jvmHeapSize = parseInt(heapSize, 10);
+        if (Number.isNaN(jvmHeapSize)) {
+          throw new Error('heapSize parameter has to be a number');
+        }
+      }
+
       const network = new NetworkStack(scope, 'opensearch-network-stack', {
         cidrBlock: cidrRange,
         maxAzs: 3,
@@ -192,6 +201,7 @@ export class OsClusterEntrypoint {
         mlNodeStorage,
         jvmSysPropsString: jvmSysProps,
         additionalConfig: ymlConfig,
+        jvmHeapSize,
         ...props,
       });