diff --git a/CHANGELOG.md b/CHANGELOG.md
index b6ab93b68d..d92fa1dfcd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,7 @@
 
 - Support for `break` and `continue` in loops. `break` and `continue` are new keywords. https://github.com/rescript-lang/rescript/pull/8348
 - Fix iterator / iterable typedefs, add generator typedefs. https://github.com/rescript-lang/rescript/pull/8355
+- Remove deprecated %external extension. https://github.com/rescript-lang/rescript/pull/8376
 
 #### :eyeglasses: Spec Compliance
 
diff --git a/compiler/frontend/ast_exp_extension.ml b/compiler/frontend/ast_exp_extension.ml
index 58391e36cb..adde841096 100644
--- a/compiler/frontend/ast_exp_extension.ml
+++ b/compiler/frontend/ast_exp_extension.ml
@@ -61,13 +61,6 @@ let handle_extension e (self : Bs_ast_mapper.mapper)
     Exp.constraint_ ~loc
       (Ast_exp_handle_external.handle_raw ~kind:Raw_re loc payload)
       (Ast_comb.to_regexp_type loc)
-  | "external" -> (
-    Location.deprecated loc
-      "%external is deprecated, use %raw or regular FFI syntax instead.";
-    match Ast_payload.as_ident payload with
-    | Some {txt = Lident x} -> Ast_exp_handle_external.handle_external loc x
-    | None | Some _ ->
-      Location.raise_errorf ~loc "external expects a single identifier")
   | "debugger" ->
     {e with pexp_desc = Ast_exp_handle_external.handle_debugger loc payload}
   | "obj" -> (
diff --git a/tests/tests/src/ExternalExtension.mjs b/tests/tests/src/ExternalExtension.mjs
deleted file mode 100644
index 58b5084505..0000000000
--- a/tests/tests/src/ExternalExtension.mjs
+++ /dev/null
@@ -1,13 +0,0 @@
-// Generated by ReScript, PLEASE EDIT WITH CARE
-
-import * as Js from "@rescript/runtime/lib/es6/Js.mjs";
-
-let match = Js.undefinedToOption(typeof __DEV__ === "undefined" ? undefined : __DEV__);
-
-if (match !== undefined) {
-  console.log("dev mode");
-} else {
-  console.log("production mode");
-}
-
-/* match Not a pure module */
diff --git a/tests/tests/src/ExternalExtension.res b/tests/tests/src/ExternalExtension.res
deleted file mode 100644
index dcc6c9b019..0000000000
--- a/tests/tests/src/ExternalExtension.res
+++ /dev/null
@@ -1,4 +0,0 @@
-switch %external(__DEV__) {
-| Some(_) => Console.log("dev mode")
-| None => Console.log("production mode")
-}