diff --git a/pkgs/applications/science/electronics/tkgate/1.x.nix b/pkgs/applications/science/electronics/tkgate/1.x.nix
deleted file mode 100644
index 831cc31ecad3..000000000000
--- a/pkgs/applications/science/electronics/tkgate/1.x.nix
+++ /dev/null
@@ -1,68 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  tcl,
-  tk,
-  libX11,
-  glibc,
-  which,
-  bison,
-  flex,
-  imake,
-  xorgproto,
-  gccmakedep,
-}:
-
-let
-  libiconvInc = lib.optionalString stdenv.hostPlatform.isLinux "${glibc.dev}/include";
-  libiconvLib = lib.optionalString stdenv.hostPlatform.isLinux "${glibc.out}/lib";
-in
-stdenv.mkDerivation rec {
-  pname = "tkgate";
-  version = "1.8.7";
-
-  src = fetchurl {
-    url = "https://www.tkgate.org/downloads/tkgate-${version}.tgz";
-    sha256 = "1pqywkidfpdbj18i03h97f4cimld4fb3mqfy8jjsxs12kihm18fs";
-  };
-
-  nativeBuildInputs = [
-    which
-    bison
-    flex
-    imake
-    gccmakedep
-  ];
-  buildInputs = [
-    tcl
-    tk
-    libX11
-    xorgproto
-  ];
-  dontUseImakeConfigure = true;
-
-  patchPhase = ''
-    sed -i config.h \
-      -e 's|.*#define.*TKGATE_TCLTK_VERSIONS.*|#define TKGATE_TCLTK_VERSIONS "${tcl.release}"|' \
-      -e 's|.*#define.*TKGATE_INCDIRS.*|#define TKGATE_INCDIRS "${tcl}/include ${tk}/include ${libiconvInc} ${libX11.dev}/include"|' \
-      -e 's|.*#define.*TKGATE_LIBDIRS.*|#define TKGATE_LIBDIRS "${tcl}/lib ${tk}/lib ${libiconvLib} ${libX11.out}/lib"|' \
-      \
-      -e '20 i #define TCL_LIBRARY "${tcl}/lib"' \
-      -e '20 i #define TK_LIBRARY "${tk}/lib/${tk.libPrefix}"' \
-      -e '20 i #define USE_ICONV 1' \
-      \
-      -e "s|.*#define.*TKGATE_HOMEDIRBASE.*|#define TKGATE_HOMEDIRBASE \\\"$out/lib\\\"|" \
-      -e "s|.*#define.*TKGATE_BINDIR.*|#define TKGATE_BINDIR \\\"$out/bin\\\"|" \
-      -e "s|.*#define.*TKGATE_MANDIR.*|#define TKGATE_MANDIR \\\"$out/share/man/man1\\\"|" \
-      -e "s|file:/usr/X11R6/lib/tkgate-|file://$out/lib/tkgate-|"
-  '';
-
-  meta = {
-    description = "Event driven digital circuit simulator with a TCL/TK-based graphical editor";
-    mainProgram = "gmac";
-    homepage = "https://www.tkgate.org/";
-    license = lib.licenses.gpl2Plus;
-    hydraPlatforms = lib.platforms.linux;
-  };
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 5d510ff5035d..c405b66dde07 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -1840,6 +1840,7 @@ mapAliases {
   timelens = throw "'timelens' has been removed due to lack of upstream maintenance"; # Added 2025-01-25
   tix = tclPackages.tix; # Added 2024-10-02
   tkcvs = tkrev; # Added 2022-03-07
+  tkgate = "'tkgate' has been removed as it is unmaintained"; # Added 2025-05-17
   tkimg = tclPackages.tkimg; # Added 2024-10-02
   todiff = "'todiff' was removed due to lack of known users"; # Added 2025-01-25
   toil = throw "toil was removed as it was broken and requires obsolete versions of libraries"; # Added 2024-09-22
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 95f7a2e87cd1..a8b2b6e9dd06 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4729,8 +4729,6 @@ with pkgs;
 
   tweet-hs = haskell.lib.compose.justStaticExecutables haskellPackages.tweet-hs;
 
-  tkgate = callPackage ../applications/science/electronics/tkgate/1.x.nix { };
-
   tremor-rs = callPackage ../tools/misc/tremor-rs { };
 
   tremor-language-server = callPackage ../tools/misc/tremor-rs/ls.nix { };