diff --git a/pkgs/by-name/cm/cmtk/package.nix b/pkgs/by-name/cm/cmtk/package.nix
deleted file mode 100644
index 93920eb50821..000000000000
--- a/pkgs/by-name/cm/cmtk/package.nix
+++ /dev/null
@@ -1,59 +0,0 @@
-{
-  lib,
-  stdenv,
-  bzip2,
-  cmake,
-  fetchurl,
-  fftw,
-  llvmPackages,
-  zlib,
-}:
-
-stdenv.mkDerivation (finalAttrs: {
-  pname = "cmtk";
-  version = "3.3.2";
-
-  src = fetchurl {
-    name = "cmtk-source.tar.gz";
-    url = "https://www.nitrc.org/frs/download.php/13188/CMTK-${finalAttrs.version}-Source.tar.gz//?i_agree=1&download_now=1";
-    hash = "sha256-iE164NCOSOypZLLZfZy9RTyrS+YnY9ECqfb4QhlsMS4=";
-  };
-
-  postPatch = ''
-    substituteInPlace apps/vtkxform.cxx --replace-fail \
-      "float xyzFloat[3] = { xyz[0], xyz[1], xyz[2] };" \
-      "float xyzFloat[3] = { (float)xyz[0], (float)xyz[1], (float)xyz[2] };"
-  '';
-
-  nativeBuildInputs = [ cmake ];
-
-  buildInputs = [
-    bzip2
-    fftw
-    zlib
-  ]
-  ++ lib.optionals stdenv.cc.isClang [
-    llvmPackages.openmp
-  ];
-
-  cmakeFlags = [
-    (lib.cmakeFeature "CMAKE_CXX_STANDARD" "14")
-  ]
-  ++ lib.optionals (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64) [
-    (lib.cmakeFeature "CMAKE_CXX_FLAGS" "-Dfinite=isfinite")
-  ];
-
-  meta = {
-    description = "Computational Morphometry Toolkit";
-    mainProgram = "cmtk";
-    longDescription = ''
-      A software toolkit for computational morphometry of
-      biomedical images, CMTK comprises a set of command line tools and a
-      back-end general-purpose library for processing and I/O
-    '';
-    maintainers = [ ];
-    platforms = lib.platforms.all;
-    license = lib.licenses.gpl3Plus;
-    homepage = "https://www.nitrc.org/projects/cmtk/";
-  };
-})
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 45d2caacc996..76007cb15d3c 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -505,6 +505,7 @@ mapAliases {
   cloudlogoffline = throw "cloudlogoffline has been removed"; # Added 2025-05-18
   clucene_core = warnAlias "'clucene_core' has been renamed to 'clucene-core'" clucene-core; # Added 2026-01-12
   clucene_core_2 = warnAlias "'clucene_core_2' has been renamed to 'clucene-core_2'" clucene-core_2; # Added 2026-01-12
+  cmtk = throw "'cmtk' has been dropped due to being broken since September 2025, with no complaints by any users of the package."; # Added 2026-04-05
   coc-sumneko-lua = throw "'coc-sumneko-lua' has been removed due to unmaintained and broken package. 'lua_ls' can be used as a replacement"; # Added 2026-02-04
   cockroachdb-bin = throw "'cockroachdb-bin' has been renamed to/replaced by 'cockroachdb'"; # Converted to throw 2025-10-27
   code-browser-gtk2 = throw "'code-browser-gtk2' has been removed, as it was broken since 22.11"; # Added 2025-08-22