diff --git a/.github/workflows/build-clickhouse-cityhash.yml b/.github/workflows/build-clickhouse-cityhash.yml
new file mode 100644
index 000000000..6ce4a04be
--- /dev/null
+++ b/.github/workflows/build-clickhouse-cityhash.yml
@@ -0,0 +1,88 @@
+# SPDX-FileCopyrightText: 2026 The RISE Project
+# SPDX-License-Identifier: MIT
+---
+# Based on the `wheels-linux`/`wheels-linux-non-x86` jobs of
+# https://github.com/xzkostyan/clickhouse-cityhash/blob/1.0.2.6/.github/workflows/actions.yml
+name: Build clickhouse-cityhash wheels (riscv64)
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'clickhouse-cityhash version to build (e.g. 1.0.2.6)'
+        required: true
+        default: '1.0.2.6'
+  pull_request:
+    paths:
+      - '.github/workflows/build-clickhouse-cityhash.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ inputs.version || '1.0.2.6' }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read  # to fetch code (actions/checkout)
+
+env:
+  CLICKHOUSE_CITYHASH_VERSION: ${{ inputs.version || '1.0.2.6' }}
+  # Upstream's "1.0.2.6" tag predates the setup.py version bump (still reads
+  # VERSION = '1.0.2.5'); the bump landed one commit later, tagged "1.0.2.6post1".
+  # Update alongside CLICKHOUSE_CITYHASH_VERSION.
+  CLICKHOUSE_CITYHASH_REF: 1.0.2.6post1
+  MANYLINUX_RISCV64_IMAGE: quay.io/pypa/manylinux_2_39_riscv64
+  MUSLLINUX_RISCV64_IMAGE: quay.io/pypa/musllinux_1_2_riscv64
+
+jobs:
+  setup:
+    uses: $/.github/workflows/_setup.yml
+
+  build_wheels:
+    needs: [setup]
+    name: Build clickhouse-cityhash ${{ inputs.version || '1.0.2.6' }} ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+    runs-on: ubuntu-24.04-riscv
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        # cp314t dropped: upstream's pinned Cython<3.1 generates __pyx_vectorcallfunc
+        # code that doesn't compile against the free-threaded CPython headers.
+        python: ["cp312", "cp313", "cp314"]
+        libc: [manylinux, musllinux]
+
+    steps:
+      - name: Checkout clickhouse-cityhash ${{ env.CLICKHOUSE_CITYHASH_REF }}
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1
+        with:
+          repository: xzkostyan/clickhouse-cityhash
+          ref: ${{ env.CLICKHOUSE_CITYHASH_REF }}
+          persist-credentials: false
+
+      - uses: pypa/cibuildwheel@1828c10ab37f080699c7b81cea34097c684a7074  # v4.2.0
+        env:
+          CIBW_ARCHS: riscv64
+          CIBW_BUILD: ${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          CIBW_MANYLINUX_RISCV64_IMAGE: ${{ env.MANYLINUX_RISCV64_IMAGE }}
+          CIBW_MUSLLINUX_RISCV64_IMAGE: ${{ env.MUSLLINUX_RISCV64_IMAGE }}
+          CIBW_TEST_REQUIRES: pytest
+          # The checkout root ships clickhouse_cityhash/__init__.py alongside tests/,
+          # which would shadow the installed wheel (gotcha 25); stage only tests/.
+          CIBW_TEST_SOURCES: tests
+          CIBW_TEST_COMMAND: >-
+            python -c "import clickhouse_cityhash.cityhash as m; assert m.__file__.endswith('.so'), m.__file__" &&
+            python -m pytest tests
+
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a  # v7.0.1
+        with:
+          name: clickhouse-cityhash-${{ env.CLICKHOUSE_CITYHASH_VERSION }}-${{ matrix.python }}-${{ matrix.libc }}_riscv64
+          path: ./wheelhouse/*.whl
+          if-no-files-found: error
+
+  publish:
+    name: Publish clickhouse-cityhash ${{ inputs.version || '1.0.2.6' }}
+    needs: [setup, build_wheels]
+    permissions:
+      contents: write
+      pull-requests: write
+    uses: $/.github/workflows/_publish-wheel.yml
+    with:
+      artifact-pattern: clickhouse-cityhash-${{ inputs.version || '1.0.2.6' }}-*riscv64