diff --git a/pkgs/data/themes/flat-remix-gtk/default.nix b/pkgs/data/themes/flat-remix-gtk/default.nix
new file mode 100644
index 000000000000..afdf478fea03
--- /dev/null
+++ b/pkgs/data/themes/flat-remix-gtk/default.nix
@@ -0,0 +1,33 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, gtk-engine-murrine
+}:
+
+stdenv.mkDerivation rec {
+  pname = "flat-remix-gtk";
+  version = "20201129";
+
+  src = fetchFromGitHub {
+    owner = "daniruiz";
+    repo = pname;
+    rev = version;
+    hash = "sha256-lAlHRVB/P3A1qWsXQZPZ3uhgctR4FLa+ocUrsbleXJU=";
+  };
+
+  dontBuild = true;
+
+  makeFlags = [ "PREFIX=$(out)" ];
+
+  propagatedUserEnvPkgs = [
+    gtk-engine-murrine
+  ];
+
+  meta = with lib; {
+    description = "GTK application theme inspired by material design";
+    homepage = "https://drasite.com/flat-remix-gtk";
+    license = licenses.gpl3Only;
+    platforms = platforms.all;
+    maintainers = [ maintainers.mkg20001 ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2bd1ff822f6a..8bec20365ecb 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21154,6 +21154,7 @@ in
   flat-remix-icon-theme = callPackage ../data/icons/flat-remix-icon-theme {
     inherit (plasma5Packages) breeze-icons;
   };
+  flat-remix-gtk = callPackage ../data/themes/flat-remix-gtk { };
 
   font-awesome_4 = (callPackage ../data/fonts/font-awesome-5 { }).v4;
   font-awesome_5 = (callPackage ../data/fonts/font-awesome-5 { }).v5;