diff --git a/pkgs/development/ocaml-modules/ocamlformat-mlx/default.nix b/pkgs/development/ocaml-modules/ocamlformat-mlx/default.nix
new file mode 100644
index 000000000000..a198a7a36f6b
--- /dev/null
+++ b/pkgs/development/ocaml-modules/ocamlformat-mlx/default.nix
@@ -0,0 +1,22 @@
+{
+  lib,
+  buildDunePackage,
+  fetchFromGitHub,
+  cmdliner,
+  odoc,
+  ocamlformat-mlx-lib,
+  re,
+}:
+buildDunePackage rec {
+  pname = "ocamlformat-mlx";
+  minimalOcamlVersion = "4.08";
+
+  inherit (ocamlformat-mlx-lib) version src meta;
+
+  buildInputs = [
+    cmdliner
+    re
+    odoc
+    ocamlformat-mlx-lib
+  ];
+}
diff --git a/pkgs/development/ocaml-modules/ocamlformat-mlx/lib.nix b/pkgs/development/ocaml-modules/ocamlformat-mlx/lib.nix
new file mode 100644
index 000000000000..7b2f4626b18e
--- /dev/null
+++ b/pkgs/development/ocaml-modules/ocamlformat-mlx/lib.nix
@@ -0,0 +1,70 @@
+{
+  lib,
+  buildDunePackage,
+  fetchFromGitHub,
+  menhir,
+  alcotest,
+  base,
+  dune-build-info,
+  either,
+  fix,
+  fpath,
+  menhirLib,
+  menhirSdk,
+  ocaml-version,
+  ocamlformat-rpc-lib,
+  ocp-indent,
+  stdio,
+  uuseg,
+  csexp,
+  astring,
+  result,
+  camlp-streams,
+  odoc,
+}:
+buildDunePackage rec {
+  pname = "ocamlformat-mlx-lib";
+  version = "0.26.2.0";
+  minimalOcamlVersion = "4.08";
+
+  src = fetchFromGitHub {
+    owner = "ocaml-mlx";
+    repo = "ocamlformat-mlx";
+    rev = version;
+    hash = "sha256-I9ZP8Ory/CRFbHUCe5NkZKKYMwtL1gl8xw965k5R718=";
+  };
+
+  propagatedBuildInputs = [
+    alcotest
+    base
+    dune-build-info
+    either
+    fix
+    fpath
+    menhirLib
+    menhirSdk
+    ocaml-version
+    ocamlformat-rpc-lib
+    ocp-indent
+    stdio
+    uuseg
+    csexp
+    astring
+    result
+    camlp-streams
+    odoc
+  ];
+
+  nativeBuildInputs = [
+    menhir
+  ];
+
+  meta = {
+    homepage = "https://github.com/ocaml-mlx/ocamlformat-mlx";
+    description = "OCaml .mlx Code Formatter";
+    maintainers = with lib.maintainers; [
+      Denommus
+    ];
+    license = lib.licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index b9e08714dce3..fc43352ca173 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -1349,6 +1349,10 @@ let
 
     ocamlformat-lib = callPackage ../development/ocaml-modules/ocamlformat/ocamlformat-lib.nix { };
 
+    ocamlformat-mlx = callPackage ../development/ocaml-modules/ocamlformat-mlx { };
+
+    ocamlformat-mlx-lib = callPackage ../development/ocaml-modules/ocamlformat-mlx/lib.nix { };
+
     ocamlformat-rpc-lib = callPackage ../development/ocaml-modules/ocamlformat/ocamlformat-rpc-lib.nix { };
 
     ocamlfuse = callPackage ../development/ocaml-modules/ocamlfuse { };