diff --git a/common/changes/office-ui-fabric-react/keco-deprec-unused-slider-enum_2018-05-07-20-05.json b/common/changes/office-ui-fabric-react/keco-deprec-unused-slider-enum_2018-05-07-20-05.json
new file mode 100644
index 00000000000000..03850b32ea462a
--- /dev/null
+++ b/common/changes/office-ui-fabric-react/keco-deprec-unused-slider-enum_2018-05-07-20-05.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "office-ui-fabric-react",
+      "comment": "Mark Slider's ValuePosition enum as deprecated as it is unused.",
+      "type": "minor"
+    }
+  ],
+  "packageName": "office-ui-fabric-react",
+  "email": "keco@microsoft.com"
+}
\ No newline at end of file
diff --git a/packages/office-ui-fabric-react/src/components/Slider/Slider.tsx b/packages/office-ui-fabric-react/src/components/Slider/Slider.tsx
index 5664501ff87173..680f95319a8f9d 100644
--- a/packages/office-ui-fabric-react/src/components/Slider/Slider.tsx
+++ b/packages/office-ui-fabric-react/src/components/Slider/Slider.tsx
@@ -18,6 +18,9 @@ export interface ISliderState {
   renderedValue?: number;
 }
 
+/**
+ * @deprecated Unused. Do not use, will be removed in 6.0
+*/
 export enum ValuePosition {
   Previous = 0,
   Next = 1