diff --git a/src/re3data/_cli.py b/src/re3data/_cli.py
index 84d9a7b..0adcdd8 100644
--- a/src/re3data/_cli.py
+++ b/src/re3data/_cli.py
@@ -7,6 +7,7 @@
 import logging
 import sys
 import typing
+from typing import Annotated, Optional
 
 from rich.console import Console
 
@@ -70,9 +71,17 @@ def callback(
 
 
 @repositories_app.command("list")
-def list_repositories(return_type: ReturnType = ReturnType.DATACLASS) -> None:
+def list_repositories(
+    query: Annotated[
+        Optional[str],  # noqa: UP007
+        typer.Option(
+            help="A query to filter the results. If provided, only repositories matching the query will be returned."
+        ),
+    ] = None,
+    return_type: ReturnType = ReturnType.DATACLASS,
+) -> None:
     """List the metadata of all repositories in the re3data API."""
-    response = re3data.repositories.list(return_type)
+    response = re3data.repositories.list(query, return_type)
     console.print(response)
 
 
diff --git a/src/re3data/_client/_async.py b/src/re3data/_client/_async.py
index a1d0c98..9d41395 100644
--- a/src/re3data/_client/_async.py
+++ b/src/re3data/_client/_async.py
@@ -9,7 +9,14 @@
 
 import httpx
 
-from re3data._client.base import BaseClient, Endpoint, ResourceType, ReturnType, is_valid_return_type
+from re3data._client.base import (
+    BaseClient,
+    Endpoint,
+    ResourceType,
+    ReturnType,
+    _build_query_params,
+    is_valid_return_type,
+)
 from re3data._exceptions import RepositoryNotFoundError
 from re3data._response import Response, _build_response, _parse_repositories_response, _parse_repository_response
 
@@ -80,10 +87,14 @@ class AsyncRepositoryManager:
     def __init__(self, client: AsyncClient) -> None:
         self._client = client
 
-    async def list(self, return_type: ReturnType = ReturnType.DATACLASS) -> list[RepositorySummary] | Response | str:
+    async def list(
+        self, query: str | None = None, return_type: ReturnType = ReturnType.DATACLASS
+    ) -> list[RepositorySummary] | Response | str:
         """List the metadata of all repositories in the re3data API.
 
         Args:
+            query: A query string to filter the results. If provided, only repositories matching the query
+                will be returned.
             return_type: The desired return type for the API resource. Defaults to `ReturnType.DATACLASS`.
 
         Returns:
@@ -95,7 +106,8 @@ async def list(self, return_type: ReturnType = ReturnType.DATACLASS) -> list[Rep
             httpx.HTTPStatusError: If the server returned an error status code >= 500.
         """
         is_valid_return_type(return_type)
-        response = await self._client._request(Endpoint.REPOSITORY_LIST.value)
+        query_params = _build_query_params(query)
+        response = await self._client._request(Endpoint.REPOSITORY_LIST.value, query_params)
         return _dispatch_return_type(response, ResourceType.REPOSITORY_LIST, return_type)
 
     async def get(
@@ -135,6 +147,9 @@ class AsyncClient(BaseClient):
         >>> response
         [RepositorySummary(id='r3d100010468', doi='https://doi.org/10.17616/R3QP53', name='Zenodo', link=Link(href='https://www.re3data.org/api/beta/repository/r3d100010468', rel='self'))]
         ... (remaining repositories truncated)
+        >>> response = await async_client.repositories.list(query="biosharing")
+        >>> response
+        [RepositorySummary(id='r3d100010142', doi='https://doi.org/10.17616/R3WS3X', name='FAIRsharing', link=Link(href='https://www.re3data.org/api/beta/repository/r3d100010142', rel='self'))]
     """
 
     _client: httpx.AsyncClient
@@ -144,11 +159,13 @@ def __init__(self) -> None:
         self._client.event_hooks["response"] = [async_log_response]
         self._repository_manager: AsyncRepositoryManager = AsyncRepositoryManager(self)
 
-    async def _request(self, path: str) -> Response:
+    async def _request(self, path: str, query_params: dict[str, str] | None = None) -> Response:
         """Send a HTTP GET request to the specified API endpoint.
 
         Args:
             path: The path to send the request to.
+            query_params: Optional URL query parameters to be sent with the HTTP GET request. This dictionary
+                contains key-value pairs that will be added as query parameters to the API endpoint specified by path.
 
         Returns:
             The response object from the HTTP request.
@@ -157,7 +174,7 @@ async def _request(self, path: str) -> Response:
             httpx.HTTPStatusError: If the server returned an error status code >= 500.
             RepositoryNotFoundError: If the `repository_id` is not found.
         """
-        http_response = await self._client.get(path)
+        http_response = await self._client.get(path, params=query_params)
         if http_response.is_server_error:
             http_response.raise_for_status()
         return _build_response(http_response)
diff --git a/src/re3data/_client/_sync.py b/src/re3data/_client/_sync.py
index d5a390a..5b9aba6 100644
--- a/src/re3data/_client/_sync.py
+++ b/src/re3data/_client/_sync.py
@@ -11,7 +11,14 @@
 
 import httpx
 
-from re3data._client.base import BaseClient, Endpoint, ResourceType, ReturnType, is_valid_return_type
+from re3data._client.base import (
+    BaseClient,
+    Endpoint,
+    ResourceType,
+    ReturnType,
+    _build_query_params,
+    is_valid_return_type,
+)
 from re3data._exceptions import RepositoryNotFoundError
 from re3data._response import Response, _build_response, _parse_repositories_response, _parse_repository_response
 
@@ -82,10 +89,14 @@ class RepositoryManager:
     def __init__(self, client: Client) -> None:
         self._client = client
 
-    def list(self, return_type: ReturnType = ReturnType.DATACLASS) -> list[RepositorySummary] | Response | str:
+    def list(
+        self, query: str | None = None, return_type: ReturnType = ReturnType.DATACLASS
+    ) -> list[RepositorySummary] | Response | str:
         """List the metadata of all repositories in the re3data API.
 
         Args:
+            query: A query string to filter the results. If provided, only repositories matching the query
+                will be returned.
             return_type: The desired return type for the API resource. Defaults to `ReturnType.DATACLASS`.
 
         Returns:
@@ -97,7 +108,8 @@ def list(self, return_type: ReturnType = ReturnType.DATACLASS) -> list[Repositor
             httpx.HTTPStatusError: If the server returned an error status code >= 500.
         """
         is_valid_return_type(return_type)
-        response = self._client._request(Endpoint.REPOSITORY_LIST.value)
+        query_params = _build_query_params(query)
+        response = self._client._request(Endpoint.REPOSITORY_LIST.value, query_params)
         return _dispatch_return_type(response, ResourceType.REPOSITORY_LIST, return_type)
 
     def get(self, repository_id: str, return_type: ReturnType = ReturnType.DATACLASS) -> Repository | Response | str:
@@ -135,6 +147,9 @@ class Client(BaseClient):
         >>> response
         [RepositorySummary(id='r3d100010468', doi='https://doi.org/10.17616/R3QP53', name='Zenodo', link=Link(href='https://www.re3data.org/api/beta/repository/r3d100010468', rel='self'))]
         ... (remaining repositories truncated)
+        >>> response = client.repositories.list(query="biosharing")
+        >>> response
+        [RepositorySummary(id='r3d100010142', doi='https://doi.org/10.17616/R3WS3X', name='FAIRsharing', link=Link(href='https://www.re3data.org/api/beta/repository/r3d100010142', rel='self'))]
     """
 
     _client: httpx.Client
@@ -144,11 +159,13 @@ def __init__(self) -> None:
         self._client.event_hooks["response"] = [log_response]
         self._repository_manager: RepositoryManager = RepositoryManager(self)
 
-    def _request(self, path: str) -> Response:
+    def _request(self, path: str, query_params: dict[str, str] | None = None) -> Response:
         """Send a HTTP GET request to the specified API endpoint.
 
         Args:
             path: The path to send the request to.
+            query_params: Optional URL query parameters to be sent with the HTTP GET request. This dictionary
+                contains key-value pairs that will be added as query parameters to the API endpoint specified by path.
 
         Returns:
             The response object from the HTTP request.
@@ -157,7 +174,7 @@ def _request(self, path: str) -> Response:
             httpx.HTTPStatusError: If the server returned an error status code >= 500.
             RepositoryNotFoundError: If the `repository_id` is not found.
         """
-        http_response = self._client.get(path)
+        http_response = self._client.get(path, params=query_params)
         if http_response.is_server_error:
             http_response.raise_for_status()
         return _build_response(http_response)
diff --git a/src/re3data/_client/base.py b/src/re3data/_client/base.py
index c4ffc58..eaec962 100644
--- a/src/re3data/_client/base.py
+++ b/src/re3data/_client/base.py
@@ -54,6 +54,22 @@ def is_valid_return_type(return_type: Any) -> None:
         raise ValueError(f"Invalid value for `return_type`: {return_type} is not one of {allowed_types}.")
 
 
+def _build_query_params(query: str | None = None) -> dict[str, str]:
+    """Build query parameters based on the input query string.
+
+    Args:
+        query: The input query string. Defaults to None.
+
+    Returns:
+        A dictionary containing the query parameter(s). If no query is provided,
+            the function returns an empty dictionary.
+    """
+    query_params = {}
+    if query:
+        query_params["query"] = query
+    return query_params
+
+
 class BaseClient:
     """An abstract base class for clients that interact with the re3data API."""
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 4c0309f..1fe55a9 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -69,6 +69,31 @@ def mock_repository_list_route(respx_mock: MockRouter, repository_list_xml: str)
     )
 
 
+@pytest.fixture()
+def mock_repository_list_query_route(respx_mock: MockRouter) -> Route:
+    query_result_xml = """<?xml version="1.0" encoding="UTF-8"?>
+        <list>
+            <repository>
+                <id>r3d100010142</id>
+                <doi>https://doi.org/10.17616/R3WS3X</doi>
+                <name>FAIRsharing</name>
+                <link href="https://www.re3data.org/api/beta/repository/r3d100010142" rel="self" />
+            </repository>
+        </list>
+    """
+    return respx_mock.get("https://www.re3data.org/api/beta/repositories?query=biosharing").mock(
+        return_value=httpx.Response(httpx.codes.OK, text=query_result_xml)
+    )
+
+
+@pytest.fixture()
+def mock_repository_list_query_empty_list_route(respx_mock: MockRouter) -> Route:
+    query_result_xml = '<?xml version="1.0" encoding="UTF-8"?><list></list>'
+    return respx_mock.get("https://www.re3data.org/api/beta/repositories?query=XXX").mock(
+        return_value=httpx.Response(httpx.codes.OK, text=query_result_xml)
+    )
+
+
 REPOSITORY_GET_XML: str = """<?xml version="1.0" encoding="utf-8"?>
 <!--re3data.org Schema for the Description of Research
 Data Repositories. Version 2.2, December 2014. doi:10.2312/re3.006-->
diff --git a/tests/integration/test_async_client.py b/tests/integration/test_async_client.py
index 187ed36..f7d6055 100644
--- a/tests/integration/test_async_client.py
+++ b/tests/integration/test_async_client.py
@@ -55,6 +55,24 @@ async def test_client_list_repositories_response(async_client: AsyncClient, mock
     assert response.status_code == httpx.codes.OK
 
 
+async def test_client_list_repositories_query_string(
+    async_client: AsyncClient, mock_repository_list_query_route: Route
+) -> None:
+    response = await async_client.repositories.list(query="biosharing")
+    assert isinstance(response, list)
+    repository = response[0]
+    assert isinstance(repository, RepositorySummary)
+    assert repository.id == "r3d100010142"
+
+
+async def test_client_list_repositories_query_string_returns_empty_list(
+    async_client: AsyncClient, mock_repository_list_query_empty_list_route: Route
+) -> None:
+    response = await async_client.repositories.list(query="XXX")
+    assert isinstance(response, list)
+    assert response == []
+
+
 async def test_client_get_single_repository_default_return_type(
     async_client: AsyncClient, mock_repository_get_route: Route, zenodo_id: str
 ) -> None:
diff --git a/tests/integration/test_cli.py b/tests/integration/test_cli.py
index 8f67303..f8eaaa5 100644
--- a/tests/integration/test_cli.py
+++ b/tests/integration/test_cli.py
@@ -102,6 +102,18 @@ def test_repository_list_invalid_return_type(mock_repository_list_route: Route)
     assert "Invalid value for '--return-type': 'json'" in result.output
 
 
+def test_repository_list_query(mock_repository_list_query_route: Route) -> None:
+    result = runner.invoke(app, ["repository", "list", "--query", "biosharing"])
+    assert result.exit_code == 0
+    assert "id='r3d100010142'" in result.output
+    assert "doi='https://doi.org/10.17616/R3WS3X'" in result.output
+
+
+def test_repository_list_query_returns_empty_list(mock_repository_list_query_empty_list_route: Route) -> None:
+    result = runner.invoke(app, ["repository", "list", "--query", "XXX"])
+    assert result.exit_code == 0
+
+
 def test_repository_get_without_repository_id(mock_repository_list_route: Route) -> None:
     result = runner.invoke(app, ["repository", "get"])
     assert result.exit_code == 2
diff --git a/tests/integration/test_client.py b/tests/integration/test_client.py
index d1d0bd9..13c97da 100644
--- a/tests/integration/test_client.py
+++ b/tests/integration/test_client.py
@@ -55,6 +55,22 @@ def test_client_list_repositories_response(client: Client, mock_repository_list_
     assert response.status_code == httpx.codes.OK
 
 
+def test_client_list_repositories_query_string(client: Client, mock_repository_list_query_route: Route) -> None:
+    response = client.repositories.list(query="biosharing")
+    assert isinstance(response, list)
+    repository = response[0]
+    assert isinstance(repository, RepositorySummary)
+    assert repository.id == "r3d100010142"
+
+
+def test_client_list_repositories_query_string_returns_empty_list(
+    client: Client, mock_repository_list_query_empty_list_route: Route
+) -> None:
+    response = client.repositories.list(query="XXX")
+    assert isinstance(response, list)
+    assert response == []
+
+
 def test_client_get_single_repository_default_return_type(
     client: Client, mock_repository_get_route: Route, zenodo_id: str
 ) -> None: