diff --git a/change/@microsoft-fast-foundation-b1cdc933-e7be-42e8-8d85-95a5af001f1a.json b/change/@microsoft-fast-foundation-b1cdc933-e7be-42e8-8d85-95a5af001f1a.json
new file mode 100644
index 00000000000..a2eacca5dc4
--- /dev/null
+++ b/change/@microsoft-fast-foundation-b1cdc933-e7be-42e8-8d85-95a5af001f1a.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "Removed the 'applyMixins' function from exported features.",
+  "packageName": "@microsoft/fast-foundation",
+  "email": "nicholasrice@noreply.github.com",
+  "dependentChangeType": "prerelease"
+}
diff --git a/packages/web-components/fast-foundation/docs/api-report.md b/packages/web-components/fast-foundation/docs/api-report.md
index f6a024ad33d..dd87f8f6af6 100644
--- a/packages/web-components/fast-foundation/docs/api-report.md
+++ b/packages/web-components/fast-foundation/docs/api-report.md
@@ -91,9 +91,6 @@ export type AnchorTarget = ValuesOf<typeof AnchorTarget>;
 // @public
 export function anchorTemplate<T extends FASTAnchor>(options?: AnchorOptions): ViewTemplate<T>;
 
-// @public
-export function applyMixins(derivedCtor: any, ...baseCtors: any[]): void;
-
 // @public
 export class ARIAGlobalStatesAndProperties {
     ariaAtomic: "true" | "false" | string | null;
diff --git a/packages/web-components/fast-foundation/src/utilities/apply-mixins.ts b/packages/web-components/fast-foundation/src/utilities/apply-mixins.ts
index ee174360944..1bfe7fa8f35 100644
--- a/packages/web-components/fast-foundation/src/utilities/apply-mixins.ts
+++ b/packages/web-components/fast-foundation/src/utilities/apply-mixins.ts
@@ -3,7 +3,7 @@ import { AttributeConfiguration } from "@microsoft/fast-element";
 /**
  * Apply mixins to a constructor.
  * Sourced from {@link https://www.typescriptlang.org/docs/handbook/mixins.html | TypeScript Documentation }.
- * @public
+ * @internal
  */
 export function applyMixins(derivedCtor: any, ...baseCtors: any[]) {
     const derivedAttributes = AttributeConfiguration.locate(derivedCtor);
diff --git a/packages/web-components/fast-foundation/src/utilities/index.ts b/packages/web-components/fast-foundation/src/utilities/index.ts
index 1e1ea5e606f..6f1b1ffb3d3 100644
--- a/packages/web-components/fast-foundation/src/utilities/index.ts
+++ b/packages/web-components/fast-foundation/src/utilities/index.ts
@@ -1,4 +1,3 @@
-export * from "./apply-mixins.js";
 export * from "./direction.js";
 export * from "./match-media-stylesheet-behavior.js";
 export * from "./property-stylesheet-behavior.js";