diff --git a/expressions/src/features.test.ts b/expressions/src/features.test.ts
index dcb029f..e3a1c3e 100644
--- a/expressions/src/features.test.ts
+++ b/expressions/src/features.test.ts
@@ -56,7 +56,8 @@ describe("FeatureFlags", () => {
         "blockScalarChompingWarning",
         "allowCaseFunction",
         "allowCronTimezone",
-        "allowCopilotRequestsPermission"
+        "allowCopilotRequestsPermission",
+        "allowDeploymentKeyword"
       ]);
     });
   });
diff --git a/expressions/src/features.ts b/expressions/src/features.ts
index c2bcdd5..a12bcf8 100644
--- a/expressions/src/features.ts
+++ b/expressions/src/features.ts
@@ -46,6 +46,12 @@ export interface ExperimentalFeatures {
    * @default false
    */
   allowCopilotRequestsPermission?: boolean;
+
+  /**
+   * Enable the deployment keyword in workflow job environment.
+   * @default false
+   */
+  allowDeploymentKeyword?: boolean;
 }
 
 /**
@@ -62,7 +68,8 @@ const allFeatureKeys: ExperimentalFeatureKey[] = [
   "blockScalarChompingWarning",
   "allowCaseFunction",
   "allowCronTimezone",
-  "allowCopilotRequestsPermission"
+  "allowCopilotRequestsPermission",
+  "allowDeploymentKeyword"
 ];
 
 export class FeatureFlags {
diff --git a/workflow-parser/src/model/converter/job/environment.ts b/workflow-parser/src/model/converter/job/environment.ts
index 8da87cf..62f729c 100644
--- a/workflow-parser/src/model/converter/job/environment.ts
+++ b/workflow-parser/src/model/converter/job/environment.ts
@@ -1,3 +1,4 @@
+import {FeatureFlags} from "@actions/expressions/features";
 import {TemplateContext} from "../../../templates/template-context.js";
 import {TemplateToken} from "../../../templates/tokens/template-token.js";
 import {isScalar} from "../../../templates/tokens/type-guards.js";
@@ -34,6 +35,17 @@ export function convertToActionsEnvironmentRef(
       case "url":
         result.url = property.value;
         break;
+
+      case "deployment": {
+        const featureFlags = context.state["featureFlags"] as FeatureFlags | undefined;
+        const flags = featureFlags ?? new FeatureFlags();
+        if (flags.isEnabled("allowDeploymentKeyword")) {
+          result.deployment = property.value;
+        } else {
+          context.error(property.key, `The key 'deployment' is not allowed`);
+        }
+        break;
+      }
     }
   }
 
diff --git a/workflow-parser/src/model/workflow-template.ts b/workflow-parser/src/model/workflow-template.ts
index 019e831..3ecb661 100644
--- a/workflow-parser/src/model/workflow-template.ts
+++ b/workflow-parser/src/model/workflow-template.ts
@@ -26,6 +26,7 @@ export type ConcurrencySetting = {
 export type ActionsEnvironmentReference = {
   name?: TemplateToken;
   url?: TemplateToken;
+  deployment?: TemplateToken;
 };
 
 export type WorkflowJob = Job | ReusableWorkflowJob;
diff --git a/workflow-parser/src/workflow-v1.0.json b/workflow-parser/src/workflow-v1.0.json
index 1b7e214..10cb330 100644
--- a/workflow-parser/src/workflow-v1.0.json
+++ b/workflow-parser/src/workflow-v1.0.json
@@ -2079,6 +2079,10 @@
           "url": {
             "type": "string-runner-context-no-secrets",
             "description": "The environment URL, which maps to `environment_url` in the deployments API."
+          },
+          "deployment": {
+            "type": "boolean",
+            "description": "Whether to create a deployment for this environment. Set to `false` to access environment secrets and variables without creating a deployment record. Defaults to `true`."
           }
         }
       }
diff --git a/workflow-parser/src/xlang.test.ts b/workflow-parser/src/xlang.test.ts
index 5b4f76e..853f706 100644
--- a/workflow-parser/src/xlang.test.ts
+++ b/workflow-parser/src/xlang.test.ts
@@ -1,6 +1,7 @@
 import * as fs from "fs";
 import * as path from "path";
 import * as YAML from "yaml";
+import {FeatureFlags} from "@actions/expressions/features";
 import {convertWorkflowTemplate} from "./model/convert.js";
 import {NoOperationTraceWriter} from "./templates/trace-writer.js";
 import {File} from "./workflows/file.js";
@@ -10,6 +11,7 @@ import {parseWorkflow} from "./workflows/workflow-parser.js";
 
 interface TestOptions {
   "include-source"?: boolean;
+  "allow-deployment-keyword"?: boolean;
   skip?: string[];
 }
 
@@ -85,7 +87,10 @@ describe("x-lang tests", () => {
         parseResult.value!, // eslint-disable-line @typescript-eslint/no-non-null-assertion
         testFileProvider,
         {
-          fetchReusableWorkflowDepth: 1
+          fetchReusableWorkflowDepth: 1,
+          featureFlags: new FeatureFlags({
+            allowDeploymentKeyword: testOptions["allow-deployment-keyword"]
+          })
         }
       );
 
diff --git a/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature-default-go.yml b/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature-default-go.yml
new file mode 100644
index 0000000..3927008
--- /dev/null
+++ b/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature-default-go.yml
@@ -0,0 +1,21 @@
+include-source: false # Drop file/line/col from output
+skip:
+  - C#
+---
+on: push
+jobs:
+  build:
+    environment:
+      name: production
+      deployment: false
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo hi
+---
+{
+  "errors": [
+    {
+      "Message": ".github/workflows/errors-job-environment-deployment-disabled-feature-default-go.yml (Line: 6, Col: 7): The key 'deployment' is not allowed"
+    }
+  ]
+}
diff --git a/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature.yml b/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature.yml
new file mode 100644
index 0000000..6de4476
--- /dev/null
+++ b/workflow-parser/testdata/reader/errors-job-environment-deployment-disabled-feature.yml
@@ -0,0 +1,21 @@
+include-source: false # Drop file/line/col from output
+skip:
+  - C#
+---
+on: push
+jobs:
+  build:
+    environment:
+      name: production
+      deployment: false
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo hi
+---
+{
+  "errors": [
+    {
+      "Message": ".github/workflows/errors-job-environment-deployment-disabled-feature.yml (Line: 6, Col: 7): The key 'deployment' is not allowed"
+    }
+  ]
+}
diff --git a/workflow-parser/testdata/reader/job-environment-deployment.yml b/workflow-parser/testdata/reader/job-environment-deployment.yml
new file mode 100644
index 0000000..7319673
--- /dev/null
+++ b/workflow-parser/testdata/reader/job-environment-deployment.yml
@@ -0,0 +1,92 @@
+include-source: false # Drop file/line/col from output
+skip:
+  - C#
+allow-deployment-keyword: true
+---
+on: push
+jobs:
+  build:
+    environment:
+      name: production
+      deployment: false
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo hi
+  build2:
+    environment:
+      name: staging
+      deployment: true
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo hi
+---
+{
+  "jobs": [
+    {
+      "type": "job",
+      "id": "build",
+      "name": "build",
+      "if": {
+        "type": 3,
+        "expr": "success()"
+      },
+      "environment": {
+        "type": 2,
+        "map": [
+          {
+            "Key": "name",
+            "Value": "production"
+          },
+          {
+            "Key": "deployment",
+            "Value": false
+          }
+        ]
+      },
+      "runs-on": "ubuntu-latest",
+      "steps": [
+        {
+          "id": "__run",
+          "if": {
+            "type": 3,
+            "expr": "success()"
+          },
+          "run": "echo hi"
+        }
+      ]
+    },
+    {
+      "type": "job",
+      "id": "build2",
+      "name": "build2",
+      "if": {
+        "type": 3,
+        "expr": "success()"
+      },
+      "environment": {
+        "type": 2,
+        "map": [
+          {
+            "Key": "name",
+            "Value": "staging"
+          },
+          {
+            "Key": "deployment",
+            "Value": true
+          }
+        ]
+      },
+      "runs-on": "ubuntu-latest",
+      "steps": [
+        {
+          "id": "__run",
+          "if": {
+            "type": 3,
+            "expr": "success()"
+          },
+          "run": "echo hi"
+        }
+      ]
+    }
+  ]
+}