diff --git a/databricks/sdk/service/_internal.py b/databricks/sdk/service/_internal.py
index 1ab8f9e9d..4fb6e09b2 100644
--- a/databricks/sdk/service/_internal.py
+++ b/databricks/sdk/service/_internal.py
@@ -63,6 +63,16 @@ def _escape_multi_segment_path_parameter(param: str) -> str:
     return urllib.parse.quote(param)
 
 
+def _escape_path_parameter(param: str) -> str:
+    """Percent-encode a single URL path segment.
+
+    Unlike ``_escape_multi_segment_path_parameter``, this encodes ``/`` as
+    ``%2F`` so values that contain slashes (e.g. Unity Catalog column names)
+    remain a single path segment.
+    """
+    return urllib.parse.quote(param, safe="")
+
+
 def _timestamp(d: Dict[str, any], field: str) -> Optional[Timestamp]:
     """
     Helper function to convert a timestamp string to a Timestamp object.
diff --git a/databricks/sdk/service/catalog.py b/databricks/sdk/service/catalog.py
index 66a621934..8752593e1 100644
--- a/databricks/sdk/service/catalog.py
+++ b/databricks/sdk/service/catalog.py
@@ -18,6 +18,7 @@
 from ..errors import OperationFailed
 from databricks.sdk.service._internal import (
     _enum,
+    _escape_path_parameter,
     _from_dict,
     _int64,
     _repeated_dict,
@@ -15500,7 +15501,7 @@ def delete(self, entity_type: str, entity_name: str, tag_key: str):
 
         self._api.do(
             "DELETE",
-            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{entity_name}/tags/{tag_key}",
+            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{_escape_path_parameter(entity_name)}/tags/{_escape_path_parameter(tag_key)}",
             headers=headers,
         )
 
@@ -15527,7 +15528,7 @@ def get(self, entity_type: str, entity_name: str, tag_key: str) -> EntityTagAssi
 
         res = self._api.do(
             "GET",
-            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{entity_name}/tags/{tag_key}",
+            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{_escape_path_parameter(entity_name)}/tags/{_escape_path_parameter(tag_key)}",
             headers=headers,
         )
         return EntityTagAssignment.from_dict(res)
@@ -15569,7 +15570,7 @@ def list(
         while True:
             json = self._api.do(
                 "GET",
-                f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{entity_name}/tags",
+                f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{_escape_path_parameter(entity_name)}/tags",
                 query=query,
                 headers=headers,
             )
@@ -15631,7 +15632,7 @@ def update(
 
         res = self._api.do(
             "PATCH",
-            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{entity_name}/tags/{tag_key}",
+            f"/api/2.1/unity-catalog/entity-tag-assignments/{entity_type}/{_escape_path_parameter(entity_name)}/tags/{_escape_path_parameter(tag_key)}",
             query=query,
             body=body,
             headers=headers,
diff --git a/tests/test_entity_tag_assignments_encoding.py b/tests/test_entity_tag_assignments_encoding.py
new file mode 100644
index 000000000..80a015265
--- /dev/null
+++ b/tests/test_entity_tag_assignments_encoding.py
@@ -0,0 +1,58 @@
+from types import SimpleNamespace
+from unittest.mock import MagicMock
+
+from databricks.sdk.service.catalog import EntityTagAssignmentsAPI
+
+
+def _client_with_mock_api():
+    api = MagicMock()
+    api._cfg = SimpleNamespace(workspace_id=None)
+    api.do.return_value = {"tag_assignments": []}
+    return EntityTagAssignmentsAPI(api), api
+
+
+def test_list_encodes_slash_in_entity_name():
+    client, api = _client_with_mock_api()
+    entity_name = "main.my_schema.my_table.Inferences/Second"
+    list(client.list(entity_type="columns", entity_name=entity_name))
+    method, path = api.do.call_args.args[:2]
+    assert method == "GET"
+    assert path == (
+        "/api/2.1/unity-catalog/entity-tag-assignments/columns/"
+        "main.my_schema.my_table.Inferences%2FSecond/tags"
+    )
+
+
+def test_get_encodes_slash_in_entity_name_and_tag_key():
+    client, api = _client_with_mock_api()
+    api.do.return_value = {
+        "entity_type": "columns",
+        "entity_name": "main.s.t.Inferences/Second",
+        "tag_key": "a/b",
+    }
+    client.get(
+        entity_type="columns",
+        entity_name="main.s.t.Inferences/Second",
+        tag_key="a/b",
+    )
+    method, path = api.do.call_args.args[:2]
+    assert method == "GET"
+    assert path == (
+        "/api/2.1/unity-catalog/entity-tag-assignments/columns/"
+        "main.s.t.Inferences%2FSecond/tags/a%2Fb"
+    )
+
+
+def test_delete_encodes_slash_in_entity_name():
+    client, api = _client_with_mock_api()
+    client.delete(
+        entity_type="columns",
+        entity_name="cat.sch.tbl.Inferences/Second",
+        tag_key="env",
+    )
+    method, path = api.do.call_args.args[:2]
+    assert method == "DELETE"
+    assert path == (
+        "/api/2.1/unity-catalog/entity-tag-assignments/columns/"
+        "cat.sch.tbl.Inferences%2FSecond/tags/env"
+    )
diff --git a/tests/test_internal.py b/tests/test_internal.py
index b438e811a..3711e6d50 100644
--- a/tests/test_internal.py
+++ b/tests/test_internal.py
@@ -10,6 +10,7 @@
     _duration,
     _enum,
     _escape_multi_segment_path_parameter,
+    _escape_path_parameter,
     _fieldmask,
     _from_dict,
     _int64,
@@ -93,6 +94,18 @@ def test_escape_multi_segment_path_parameter():
     assert _escape_multi_segment_path_parameter("a#b") == "a%23b"
 
 
+def test_escape_path_parameter_encodes_slash():
+    # Single-segment encoding must turn "/" into "%2F" (issue #1493).
+    assert _escape_path_parameter("a/b") == "a%2Fb"
+    assert _escape_path_parameter("main.schema.table.Inferences/Second") == (
+        "main.schema.table.Inferences%2FSecond"
+    )
+    assert _escape_path_parameter("a b") == "a%20b"
+    assert _escape_path_parameter("a?b") == "a%3Fb"
+    assert _escape_path_parameter("a#b") == "a%23b"
+    assert _escape_path_parameter("a%b") == "a%25b"
+
+
 @pytest.mark.parametrize(
     "input_dict,field_name,expected_timestamp,description",
     [