diff --git a/.github/workflows/OCV-PR-Linux-ORT.yaml b/.github/workflows/OCV-PR-Linux-ORT.yaml
new file mode 100644
index 00000000..3d7c69da
--- /dev/null
+++ b/.github/workflows/OCV-PR-Linux-ORT.yaml
@@ -0,0 +1,125 @@
+name: OCV PR Linux ORT
+
+on:
+  pull_request:
+    branches:
+      - main
+    paths:
+      - '.github/workflows/OCV-PR-Linux-ORT.yaml'
+      # TODO: are following paths necessary?
+      # - 'checkout-and-merge/*'
+      # - 'configure-and-build/*'
+      # - 'run-tests/*'
+      # - 'scripts/runner.py'
+      # - 'scripts/test-plan.json'
+  workflow_call:
+    inputs:
+      workflow_branch:
+        description: "Branch for ci-gha-workflow repository"
+        default: "main"
+        required: false
+        type: string
+
+concurrency:
+  group: OCV-PR-Linux-ORT-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+
+  branch_eval:
+    runs-on: ubuntu-24.04
+    outputs:
+      branches: ${{ steps.determine-branches.outputs.branches }}
+    steps:
+      - id: determine-branches
+        shell: bash
+        run: |
+          if [[ "${{ github.event.repository.name }}" == "ci-gha-workflow" || "${{ github.base_ref }}" == "5.x" ]]; then
+            echo "branches=['5.x']" >> "$GITHUB_OUTPUT"
+          else
+            echo "branches=[]" >> "$GITHUB_OUTPUT"
+          fi
+
+  Ubuntu:
+    runs-on: opencv-cn-lin-x86-64
+    needs:
+      - branch_eval
+    if: ${{ needs.branch_eval.outputs.branches != '[]' }}
+    defaults:
+      run:
+        shell: bash
+    container:
+      image: 'quay.io/opencv-ci/opencv-ubuntu-24.04:20251127'
+      volumes:
+        - /home/opencv-cn/git_cache:/opt/git_cache
+        - /home/opencv-cn/ci_cache/opencv/24.04:/opt/.ccache
+        - /home/opencv-cn/binaries_cache/24.04:/opt/binaries_cache
+        - /home/opencv-cn/dnn-models:/opt/dnn-models
+    env:
+      ANT_HOME: '/usr/share/ant'
+      DNN_MODELS: '/opt/dnn-models'
+      CCACHE_DIR: '/opt/.ccache'
+      CCACHE_MAXSIZE: '8G'
+      OPENCV_DOWNLOAD_PATH: '/opt/binaries_cache'
+      CMAKE_OPT: >-
+        -DWITH_ONNXRUNTIME=ON
+      HOME: '/home/ubuntu'
+      MAIN_BUILD_DIR: "build"
+      OPENCV_FOR_THREADS_NUM: 8
+      CMAKE_BUILD_PARALLEL_LEVEL: 8
+
+    steps:
+    - name: Checkout workflow repository
+      uses: actions/checkout@v4
+      with:
+        repository: opencv/ci-gha-workflow
+        ref: "${{ github.repository == 'opencv/ci-gha-workflow' && github.ref || inputs.workflow_branch }}"
+
+    - name: Checkout and merge OpenCV
+      uses: ./checkout-and-merge
+      with:
+        target_branch: "5.x"
+        author: "${{ github.event.pull_request.user.login }}"
+        source_branch: "${{ github.event.repository.name == 'ci-gha-workflow' && '' || github.head_ref }}"
+        gitcache: '/opt/git_cache'
+        home: '${{ env.HOME }}'
+        workdir: '${{ env.HOME }}'
+
+    - name: Update extra dnn models
+      timeout-minutes: 60
+      working-directory: '${{ env.HOME }}'
+      run: |
+        ls -lR ${{ env.DNN_MODELS }}
+        python3 opencv_extra/testdata/dnn/download_models.py \
+          --cleanup \
+          --dst '${{ env.DNN_MODELS }}/dnn'
+        echo "OPENCV_DNN_TEST_DATA_PATH=${{ env.DNN_MODELS }}" >> $GITHUB_ENV
+
+    - name: Configure and build OpenCV
+      id: build-opencv
+      uses: ./configure-and-build
+      with:
+        workdir: '${{ env.HOME }}'
+        builddir: 'build'
+        generator: 'Ninja'
+        options: '${{ env.CMAKE_OPT }}'
+
+    - name: "Accuracy:DNN_ORT"
+      timeout-minutes: 60
+      if: ${{ always() && steps.build-opencv.outcome == 'success' }}
+      env:
+        OPENCV_TEST_DATA_PATH: '${{ env.HOME }}/opencv_extra/testdata'
+        OPENCV_FORCE_DNN_ENGINE: "4"
+        GTEST_FILTER_STRING: "*:-*conformance*"
+      run: |
+        cd ${{ env.HOME }}/${{ env.MAIN_BUILD_DIR }}
+        xvfb-run -a bin/opencv_test_dnn \
+          --gtest_filter="${{ env.GTEST_FILTER_STRING }}" \
+          --test_threads=${{ env.OPENCV_FOR_THREADS_NUM }} \
+          --skip_unstable=1
+
+    - if: ${{ always() && env.WARNINGS == '1' }}
+      name: Warnings check
+      run: |
+        echo "::error Warnings have been found!"
+        exit 1