diff --git a/build_tools/ci/test_posix.sh b/build_tools/ci/test_posix.sh
index 4e5ebc008dd0..3a9f5b7afa61 100755
--- a/build_tools/ci/test_posix.sh
+++ b/build_tools/ci/test_posix.sh
@@ -8,6 +8,10 @@ torch_version="${1:-unknown}"
 
 export PYTHONPATH="$repo_root/build/tools/torch-mlir/python_packages/torch_mlir:$repo_root/projects/pt1"
 
+echo "::group::Run ONNX e2e integration tests"
+python -m e2e_testing.main --config=onnx -v
+echo "::endgroup::"
+
 case $torch_version in
   nightly)
     # Failing with: NotImplementedError:
diff --git a/projects/pt1/e2e_testing/main.py b/projects/pt1/e2e_testing/main.py
index 952795d555bc..1261d74d73ff 100644
--- a/projects/pt1/e2e_testing/main.py
+++ b/projects/pt1/e2e_testing/main.py
@@ -20,6 +20,7 @@
 from torch_mlir_e2e_test.configs import (
     LazyTensorCoreTestConfig,
     NativeTorchTestConfig,
+    OnnxBackendTestConfig,
     TorchScriptTestConfig,
     FxImporterTestConfig,
 )
@@ -70,6 +71,8 @@ def _get_argparse():
         "native_torch",
         "torchscript",
         "lazy_tensor_core",
+        "onnx",
+        "onnx_tosa",
         "fx_importer",
         "fx_importer_stablehlo",
         "fx_importer_tosa",
@@ -89,11 +92,11 @@ def _get_argparse():
 "torchscript": compile the model to a torch.jit.ScriptModule, and then run that as-is (useful for verifying TorchScript is modeling the program correctly).
 "lazy_tensor_core": run the model through the Lazy Tensor Core frontend and execute the traced graph.
 # "torchdynamo": run the model through the TorchDynamo frontend and execute the graph using Linalg-on-Tensors.
-# "onnx": export to the model via onnx and reimport using the torch-onnx-to-torch path.
+"onnx": export to the model via onnx and reimport using the torch-onnx-to-torch path.
 "fx_importer": run the model through the fx importer frontend and execute the graph using Linalg-on-Tensors.
 "fx_importer_stablehlo": run the model through the fx importer frontend and execute the graph using Stablehlo backend.
 "fx_importer_tosa": run the model through the fx importer frontend and execute the graph using the TOSA backend.
-# "onnx_tosa": Import ONNX to Torch via the torch-onnx-to-torch path and execute the graph using the TOSA backend.
+"onnx_tosa": Import ONNX to Torch via the torch-onnx-to-torch path and execute the graph using the TOSA backend.
 """,
     )
     parser.add_argument(
diff --git a/projects/pt1/python/torch_mlir_e2e_test/configs/__init__.py b/projects/pt1/python/torch_mlir_e2e_test/configs/__init__.py
index daf712295e30..b0fcbd3264ca 100644
--- a/projects/pt1/python/torch_mlir_e2e_test/configs/__init__.py
+++ b/projects/pt1/python/torch_mlir_e2e_test/configs/__init__.py
@@ -5,5 +5,6 @@
 
 from .lazy_tensor_core import LazyTensorCoreTestConfig
 from .native_torch import NativeTorchTestConfig
+from .onnx_backend import OnnxBackendTestConfig
 from .torchscript import TorchScriptTestConfig
 from .fx_importer_backend import FxImporterTestConfig