diff --git a/pkgs/development/python-modules/onnx-ir/default.nix b/pkgs/development/python-modules/onnx-ir/default.nix
new file mode 100644
index 000000000000..fd2dc9033d38
--- /dev/null
+++ b/pkgs/development/python-modules/onnx-ir/default.nix
@@ -0,0 +1,87 @@
+{
+  lib,
+  stdenv,
+  buildPythonPackage,
+  fetchFromGitHub,
+
+  # build-system
+  setuptools,
+
+  # dependencies
+  ml-dtypes,
+  numpy,
+  onnx,
+  typing-extensions,
+
+  # tests
+  onnxruntime,
+  parameterized,
+  pytestCheckHook,
+  torch,
+  tqdm,
+}:
+
+buildPythonPackage (finalAttrs: {
+  pname = "onnx-ir";
+  version = "0.1.14_1";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "onnx";
+    repo = "ir-py";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-mlUz5LGMtW4q78lBcbjo96V7k6NL+mt1lSvOU/6GEOY=";
+  };
+
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
+    ml-dtypes
+    numpy
+    onnx
+    typing-extensions
+  ];
+
+  pythonImportsCheck = [ "onnx_ir" ];
+
+  nativeCheckInputs = [
+    onnxruntime
+    parameterized
+    pytestCheckHook
+    torch
+    tqdm
+  ];
+
+  disabledTests = [
+    # fixture 'model_info' not found
+    "test_model"
+
+    # Flaky:
+    # onnx.onnx_cpp2py_export.checker.ValidationError: No Op registered for LabelEncoder with domain_version of 4
+    # ==> Context: Bad node spec for node. Name:  OpType: LabelEncoder
+    "SerdeTest"
+
+    # Circular dependency with onnxscript
+    "test_correct_module_name"
+  ];
+
+  disabledTestPaths = [
+    # Circular dependency with onnxscript
+    "src/onnx_ir/passes/common/common_subexpression_elimination_test.py"
+  ];
+
+  # Importing onnxruntime in the sandbox crashes on aarch64-linux:
+  # Fatal Python error: Aborted
+  # See https://github.com/NixOS/nixpkgs/pull/481039
+  doCheck = !(stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64);
+
+  meta = {
+    description = "Efficient in-memory representation for ONNX, in Python";
+    homepage = "https://github.com/onnx/ir-py";
+    changelog = "https://github.com/onnx/ir-py/releases/tag/${finalAttrs.src.tag}";
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ GaetanLepage ];
+  };
+})
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 90f87b9925e5..1e3a5c1659fd 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -11245,6 +11245,8 @@ self: super: with self; {
     };
   };
 
+  onnx-ir = callPackage ../development/python-modules/onnx-ir { };
+
   onnxconverter-common = callPackage ../development/python-modules/onnxconverter-common { };
 
   onnxmltools = callPackage ../development/python-modules/onnxmltools { };