diff --git a/changelog.d/20260320_121518_sirosen_search_filter_roles.rst b/changelog.d/20260320_121518_sirosen_search_filter_roles.rst
new file mode 100644
index 000000000..16a1d0774
--- /dev/null
+++ b/changelog.d/20260320_121518_sirosen_search_filter_roles.rst
@@ -0,0 +1,4 @@
+Added
+-----
+
+- Added support for ``filter_roles`` as a parameter to ``SearchClient.index_list``. (:pr:`NUMBER`)
diff --git a/src/globus_sdk/services/search/client.py b/src/globus_sdk/services/search/client.py
index 88d1a49ea..1628f05c9 100644
--- a/src/globus_sdk/services/search/client.py
+++ b/src/globus_sdk/services/search/client.py
@@ -1,11 +1,12 @@
 from __future__ import annotations
 
 import logging
+import sys
 import typing as t
 import uuid
 
 from globus_sdk import client, paging, response
-from globus_sdk._internal.remarshal import strseq_listify
+from globus_sdk._internal.remarshal import commajoin, strseq_listify
 from globus_sdk._missing import MISSING, MissingType
 from globus_sdk.scopes import SearchScopes
 
@@ -13,8 +14,15 @@
 from .errors import SearchAPIError
 from .response import IndexListResponse
 
+if sys.version_info >= (3, 10):
+    from typing import TypeAlias
+else:
+    from typing_extensions import TypeAlias
+
 log = logging.getLogger(__name__)
 
+_VALID_ROLE_NAMES_T: TypeAlias = t.Literal["owner", "admin", "writer"]
+
 
 class SearchClient(client.BaseClient):
     r"""
@@ -229,12 +237,18 @@ def get_index(
 
     def index_list(
         self,
+        filter_roles: (
+            _VALID_ROLE_NAMES_T | t.Iterable[_VALID_ROLE_NAMES_T] | MissingType
+        ) = MISSING,
         *,
         query_params: dict[str, t.Any] | None = None,
     ) -> response.IterableResponse:
         """
         Get a list of indices on which the caller has permissions.
 
+        :param filter_roles: An iterable of roles to use to filter the listing. By
+            default, all indices where the user has a role are returned.
+            Valid values are ``owner``, ``admin``, and ``writer``.
         :param query_params: additional parameters to pass as query params
 
         .. tab-set::
@@ -260,6 +274,7 @@ def index_list(
                     :ref: search/reference/index_list/
         """  # noqa: E501
         log.debug("SearchClient.index_list()")
+        query_params = {"filter_roles": commajoin(filter_roles), **(query_params or {})}
         return IndexListResponse(self.get("/v1/index_list", query_params=query_params))
 
     #
diff --git a/tests/functional/services/search/test_index_list.py b/tests/functional/services/search/test_index_list.py
index be2d2b494..fb24286b2 100644
--- a/tests/functional/services/search/test_index_list.py
+++ b/tests/functional/services/search/test_index_list.py
@@ -1,4 +1,10 @@
-from globus_sdk.testing import load_response
+import dataclasses
+import urllib.parse
+
+import pytest
+
+from globus_sdk._missing import MISSING
+from globus_sdk.testing import get_last_request, load_response
 
 
 def test_search_index_list(client):
@@ -24,3 +30,54 @@ def test_search_index_list_is_iterable(client):
     index_list = list(res)
     assert len(index_list) == len(index_ids)
     assert [i["id"] for i in index_list] == index_ids
+
+
+_OMIT = object()
+
+
+@dataclasses.dataclass
+class FilterRoleParam:
+    name: str
+    value: object
+    expect_parsed_param: object = None
+
+    @property
+    def missing(self) -> bool:
+        return self.value in (_OMIT, MISSING)
+
+    @property
+    def call_kwargs(self) -> dict[str, object]:
+        return {} if self.value is _OMIT else {"filter_roles": self.value}
+
+    def __str__(self) -> str:
+        return self.name
+
+
+@pytest.mark.parametrize(
+    "filter_param",
+    [
+        FilterRoleParam("omitted", _OMIT),
+        FilterRoleParam("missing", MISSING),
+        FilterRoleParam("ownerstr", "owner", ["owner"]),
+        FilterRoleParam("adminstr", "admin", ["admin"]),
+        FilterRoleParam("writerstr", "writer", ["writer"]),
+        FilterRoleParam("tuple", ("owner", "admin"), ["owner,admin"]),
+        FilterRoleParam("list", ["admin", "writer"], ["admin,writer"]),
+        FilterRoleParam("duplicates", ("admin", "admin"), ["admin,admin"]),
+        # this isn't a real role, but it should be passed through as though it were
+        # -- this value can be a typing time error but never a runtime error
+        FilterRoleParam("unknown_str", "ambassador", ["ambassador"]),
+    ],
+    ids=str,
+)
+def test_search_index_list_encodes_filter_roles_as_expected(client, filter_param):
+    load_response(client.index_list).metadata
+    res = client.index_list(**filter_param.call_kwargs)
+    assert res.http_status == 200
+
+    req = get_last_request()
+    parsed_qs = urllib.parse.parse_qs(urllib.parse.urlparse(req.url).query)
+    if filter_param.missing:
+        assert "filter_roles" not in parsed_qs
+    else:
+        assert parsed_qs["filter_roles"] == filter_param.expect_parsed_param