diff --git a/python/pyarrow/interchange/column.py b/python/pyarrow/interchange/column.py
index ddbceabcb00a..f80c586ff950 100644
--- a/python/pyarrow/interchange/column.py
+++ b/python/pyarrow/interchange/column.py
@@ -20,7 +20,6 @@
 import enum
 from typing import (
     Any,
-    Dict,
     Iterable,
     Optional,
     Tuple,
@@ -379,7 +378,7 @@ def describe_null(self) -> Tuple[ColumnNullType, Any]:
             return ColumnNullType.USE_BITMASK, 0
 
     @property
-    def null_count(self) -> int:
+    def null_count(self) -> int | None:
         """
         Number of null elements, if known.
 
@@ -390,7 +389,7 @@ def null_count(self) -> int:
         return n
 
     @property
-    def metadata(self) -> Dict[str, Any]:
+    def metadata(self) -> None:
         """
         The metadata for the column. See `DataFrame.metadata` for more details.
         """
@@ -466,7 +465,7 @@ def get_buffers(self) -> ColumnBuffers:
 
     def _get_data_buffer(
         self,
-    ) -> Tuple[_PyArrowBuffer, Any]:  # Any is for self.dtype tuple
+    ) -> Tuple[_PyArrowBuffer, Any] | None:  # Any is for self.dtype tuple
         """
         Return the buffer containing the data and the buffer's
         associated dtype.
@@ -505,7 +504,7 @@ def _get_validity_buffer(self) -> Tuple[_PyArrowBuffer, Any]:
                 "There are no missing values so "
                 "does not have a separate mask")
 
-    def _get_offsets_buffer(self) -> Tuple[_PyArrowBuffer, Any]:
+    def _get_offsets_buffer(self) -> Tuple[_PyArrowBuffer, Any] | None:
         """
         Return the buffer containing the offset values for variable-size binary
         data (e.g., variable-length strings) and the buffer's associated dtype.