diff --git a/.github/workflows/reserve-conduitio.yml b/.github/workflows/reserve-conduitio.yml
new file mode 100644
index 0000000..fb2f322
--- /dev/null
+++ b/.github/workflows/reserve-conduitio.yml
@@ -0,0 +1,25 @@
+name: reserve-conduitio
+
+# One-off: publishes a 0.0.0 placeholder so the `conduitio` PyPI name is
+# claimed for the unified ConduitIO Python distribution (see issue #5).
+# Requires a PyPI pending publisher: project `conduitio`, owner ConduitIO,
+# repo conduit-connector-sdk-python, workflow reserve-conduitio.yml, no
+# environment. Manual trigger only.
+on:
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write # Trusted Publishing (OIDC), no API token
+    steps:
+      - uses: actions/checkout@v4
+      - uses: astral-sh/setup-uv@v5
+      - run: uv build
+        working-directory: reserve/conduitio
+      - run: uv run --with twine twine check dist/*
+        working-directory: reserve/conduitio
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          packages-dir: reserve/conduitio/dist/
diff --git a/reserve/conduitio/README.md b/reserve/conduitio/README.md
new file mode 100644
index 0000000..2e6de2e
--- /dev/null
+++ b/reserve/conduitio/README.md
@@ -0,0 +1,9 @@
+# conduitio
+
+This name is reserved for the ConduitIO Python SDK: connectors, processors and the embedded client.
+This release contains no code.
+
+Until the unified package is published, use
+[`conduit-connector-sdk`](https://pypi.org/project/conduit-connector-sdk/) and
+[`conduit-client`](https://pypi.org/project/conduit-client/).
+See [Conduit](https://github.com/ConduitIO/conduit).
diff --git a/reserve/conduitio/pyproject.toml b/reserve/conduitio/pyproject.toml
new file mode 100644
index 0000000..cf6a099
--- /dev/null
+++ b/reserve/conduitio/pyproject.toml
@@ -0,0 +1,20 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "conduitio"
+version = "0.0.0"
+description = "Name reserved for the ConduitIO Python SDK (connectors, processors, client). Not usable yet; see conduit-connector-sdk."
+readme = "README.md"
+license = "Apache-2.0"
+requires-python = ">=3.12"
+authors = [{ name = "ConduitIO" }]
+classifiers = ["Development Status :: 1 - Planning"]
+
+[project.urls]
+Homepage = "https://github.com/ConduitIO/conduit-connector-sdk-python"
+Issues = "https://github.com/ConduitIO/conduit-connector-sdk-python/issues"
+
+[tool.hatch.build.targets.wheel]
+packages = ["src/conduitio"]
diff --git a/reserve/conduitio/src/conduitio/__init__.py b/reserve/conduitio/src/conduitio/__init__.py
new file mode 100644
index 0000000..372fc41
--- /dev/null
+++ b/reserve/conduitio/src/conduitio/__init__.py
@@ -0,0 +1 @@
+"""Placeholder: name reserved for the ConduitIO Python SDK. No functionality."""
diff --git a/reserve/conduitio/uv.lock b/reserve/conduitio/uv.lock
new file mode 100644
index 0000000..66f08d8
--- /dev/null
+++ b/reserve/conduitio/uv.lock
@@ -0,0 +1,8 @@
+version = 1
+revision = 3
+requires-python = ">=3.12"
+
+[[package]]
+name = "conduitio"
+version = "0.0.0"
+source = { editable = "." }