diff --git a/pkgs/development/python-modules/chainer/default.nix b/pkgs/development/python-modules/chainer/default.nix
deleted file mode 100644
index b31f869244ce..000000000000
--- a/pkgs/development/python-modules/chainer/default.nix
+++ /dev/null
@@ -1,76 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  config,
-  cudaSupport ? config.cudaSupport,
-  cupy,
-  fetchFromGitHub,
-  filelock,
-  mock,
-  protobuf,
-  pytestCheckHook,
-  pythonOlder,
-  six,
-  setuptools,
-  numpy,
-  typing-extensions,
-}:
-
-buildPythonPackage rec {
-  pname = "chainer";
-  version = "7.8.1.post1";
-  build-system = [ setuptools ];
-
-  disabled = pythonOlder "3.7";
-
-  src = fetchFromGitHub {
-    owner = "chainer";
-    repo = "chainer";
-    tag = "v${version}";
-    hash = "sha256-epwnExmyCWmwaOz+mJnAl1peEeHLBdQGC62BlLfSTQQ=";
-  };
-
-  postPatch = ''
-    substituteInPlace chainer/_environment_check.py \
-      --replace-fail "import numpy.distutils.system_info" "import numpy" \
-      --replace-fail "numpy.distutils.system_info" "numpy.__config__.get_info"
-  '';
-
-  dependencies = [
-    filelock
-    protobuf
-    six
-    typing-extensions
-    numpy
-  ] ++ lib.optionals cudaSupport [ cupy ];
-
-  nativeCheckInputs = [
-    mock
-    pytestCheckHook
-  ];
-
-  pytestFlagsArray = [ "tests/chainer_tests/utils_tests" ];
-
-  preCheck = ''
-    # cf. https://github.com/chainer/chainer/issues/8621
-    export CHAINER_WARN_VERSION_MISMATCH=0
-
-    # ignore pytest warnings not listed
-    rm setup.cfg
-  '';
-
-  disabledTests = [
-    "gpu"
-    "cupy"
-    "ideep"
-  ];
-
-  pythonImportsCheck = [ "chainer" ];
-
-  meta = {
-    description = "Flexible framework of neural networks for deep learning";
-    homepage = "https://chainer.org/";
-    license = lib.licenses.mit;
-    maintainers = with lib.maintainers; [ hyphon81 ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index d6fc096ca3c2..d06c318fbb10 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -110,6 +110,7 @@ mapAliases ({
   case = throw "case has been removed, since it is an unused leaf package with a dependency on the nose test framework"; # added 2024-07-08
   cchardet = faust-cchardet; # added 2023-03-02
   cepa = throw "cepa has been removed, as onionshare switched back to stem"; # added 2024-05-07
+  chainer = throw "chainer has been removed, as it is abandoned and broken"; # added 2024-12-31
   chiabip158 = throw "chiabip158 has been removed. see https://github.com/NixOS/nixpkgs/pull/270254"; # added 2023-11-26
   chiapos = throw "chiapos has been removed. see https://github.com/NixOS/nixpkgs/pull/270254"; # added 2023-11-26
   chiavdf = throw "chiavdf has been removed. see https://github.com/NixOS/nixpkgs/pull/270254"; # added 2023-11-26
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index bb340ba7b420..8eba67d3b5f9 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -2234,10 +2234,6 @@ self: super: with self; {
 
   chai = callPackage ../development/python-modules/chai { };
 
-  chainer = callPackage ../development/python-modules/chainer {
-    inherit (pkgs.config) cudaSupport;
-  };
-
   chainmap = callPackage ../development/python-modules/chainmap { };
 
   chainstream = callPackage ../development/python-modules/chainstream { };
diff --git a/pkgs/top-level/release-cuda.nix b/pkgs/top-level/release-cuda.nix
index a19bc6f8ecaa..819f694fbd11 100644
--- a/pkgs/top-level/release-cuda.nix
+++ b/pkgs/top-level/release-cuda.nix
@@ -121,7 +121,6 @@ let
         boxx = linux;
         bpycv = linux;
         catboost = linux;
-        chainer = linux;
         cupy = linux;
         faiss = linux;
         faster-whisper = linux;