diff --git a/change/@fluentui-react-progress-4314d015-0a93-40af-abb9-0fa3d9ec86cb.json b/change/@fluentui-react-progress-4314d015-0a93-40af-abb9-0fa3d9ec86cb.json
new file mode 100644
index 00000000000000..8f68e0e13ab126
--- /dev/null
+++ b/change/@fluentui-react-progress-4314d015-0a93-40af-abb9-0fa3d9ec86cb.json
@@ -0,0 +1,7 @@
+{
+  "type": "patch",
+  "comment": "fix: add subtle animation for indeterminate progress bar when reduced motion mode is enabled",
+  "packageName": "@fluentui/react-progress",
+  "email": "dmytrokirpa@microsoft.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/react-components/react-progress/library/src/components/ProgressBar/useProgressBarStyles.styles.ts b/packages/react-components/react-progress/library/src/components/ProgressBar/useProgressBarStyles.styles.ts
index 75d46c9097e555..2053cbc6649dfe 100644
--- a/packages/react-components/react-progress/library/src/components/ProgressBar/useProgressBarStyles.styles.ts
+++ b/packages/react-components/react-progress/library/src/components/ProgressBar/useProgressBarStyles.styles.ts
@@ -26,6 +26,18 @@ const indeterminateProgressBar = {
   },
 };
 
+const indeterminateProgressBarReducedMotion = {
+  '0%': {
+    opacity: '.2',
+  },
+  '50%': {
+    opacity: '1',
+  },
+  '100%': {
+    opacity: '.2',
+  },
+};
+
 /**
  * Styles for the root slot
  */
@@ -84,8 +96,10 @@ const useBarStyles = makeStyles({
     animationTimingFunction: 'linear',
     animationIterationCount: 'infinite',
     '@media screen and (prefers-reduced-motion: reduce)': {
-      animationDuration: '0.01ms',
-      animationIterationCount: '1',
+      maxWidth: '100%',
+      animationIterationCount: 'infinite',
+      animationDuration: '3s',
+      animationName: indeterminateProgressBarReducedMotion,
     },
   },