diff --git a/pkgs/development/ocaml-modules/lem/default.nix b/pkgs/development/ocaml-modules/lem/default.nix
new file mode 100644
index 00000000000..39952366dba
--- /dev/null
+++ b/pkgs/development/ocaml-modules/lem/default.nix
@@ -0,0 +1,45 @@
+{ stdenv
+, fetchFromGitHub
+, lib
+, ncurses
+, makeWrapper
+, ocamlbuild
+, findlib
+, ocaml
+, num
+, zarith
+}:
+
+lib.throwIfNot (lib.versionAtLeast ocaml.version "4.07")
+  "lem is not available for OCaml ${ocaml.version}"
+
+stdenv.mkDerivation rec {
+  pname = "ocaml${ocaml.version}-lem";
+  version = "2022-12-10";
+
+  src = fetchFromGitHub {
+    owner = "rems-project";
+    repo = "lem";
+    rev = version;
+    hash = "sha256-ZQgcuIVRkJS0KtpzjbO4OPHGg6B0TadWA6XpRir30y8=";
+  };
+
+  nativeBuildInputs = [ makeWrapper ocamlbuild findlib ocaml ];
+  propagatedBuildInputs = [ zarith num ];
+
+  installFlags = [ "INSTALL_DIR=$(out)" ];
+
+  createFindlibDestdir = true;
+
+  postInstall = ''
+    wrapProgram $out/bin/lem --set LEMLIB $out/share/lem/library
+  '';
+
+  meta = with lib; {
+    homepage = "https://github.com/rems-project/lem";
+    description = "A tool for lightweight executable mathematics";
+    maintainers = with maintainers; [ genericnerdyusername ];
+    license = with licenses; [ bsd3 gpl2 ];
+    platforms = ocaml.meta.platforms;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 77580b9a32f..6c70185c0cb 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -743,6 +743,8 @@ let
 
     lastfm = callPackage ../development/ocaml-modules/lastfm { };
 
+    lem = callPackage ../development/ocaml-modules/lem { };
+
     lens = callPackage ../development/ocaml-modules/lens { };
 
     letsencrypt = callPackage ../development/ocaml-modules/letsencrypt { };