diff --git a/CHANGES.md b/CHANGES.md
index aea2693d1fa5..50e5880369a4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -65,32 +65,7 @@
 
 ## I/Os
 
-* Support for X source added (Java/Python) ([#X](https://github.com/apache/beam/issues/X)).
-
-## New Features / Improvements
-
-* X feature added (Java/Python) ([#X](https://github.com/apache/beam/issues/X)).
-
-## Breaking Changes
-
-* X behavior was changed ([#X](https://github.com/apache/beam/issues/X)).
-
-## Deprecations
-
-* X behavior is deprecated and will be removed in X versions ([#X](https://github.com/apache/beam/issues/X)).
-
-## Bugfixes
-
-* Fixed X (Java/Python) ([#X](https://github.com/apache/beam/issues/X)).
-
-## Security Fixes
-
-* Fixed [CVE-YYYY-NNNN](https://www.cve.org/CVERecord?id=CVE-YYYY-NNNN) (Java/Python/Go) ([#X](https://github.com/apache/beam/issues/X)).
-
-## Known Issues
-
-[comment]: # ( When updating known issues after release, make sure also update website blog in website/www/site/content/blog.)
-* ([#X](https://github.com/apache/beam/issues/X)).
+* Added DATE, DATETIME, and JSON type support to BigQuery I/O for use with Storage Write API and BEAM_ROW format (Python) ([#25946](https://github.com/apache/beam/issues/25946)).
 
 # [2.71.0] - Unreleased
 
diff --git a/sdks/python/apache_beam/io/gcp/bigquery_schema_tools.py b/sdks/python/apache_beam/io/gcp/bigquery_schema_tools.py
index 54c7ca90f011..b464ad375bc0 100644
--- a/sdks/python/apache_beam/io/gcp/bigquery_schema_tools.py
+++ b/sdks/python/apache_beam/io/gcp/bigquery_schema_tools.py
@@ -49,6 +49,9 @@
     "BYTES": bytes,
     "TIMESTAMP": apache_beam.utils.timestamp.Timestamp,
     "GEOGRAPHY": str,
+    "DATE": str,
+    "DATETIME": str,
+    "JSON": str,
     #TODO(https://github.com/apache/beam/issues/20810):
     # Finish mappings for all BQ types
 }
diff --git a/sdks/python/apache_beam/io/gcp/bigquery_schema_tools_test.py b/sdks/python/apache_beam/io/gcp/bigquery_schema_tools_test.py
index 0eb3351ee84c..48df50462c94 100644
--- a/sdks/python/apache_beam/io/gcp/bigquery_schema_tools_test.py
+++ b/sdks/python/apache_beam/io/gcp/bigquery_schema_tools_test.py
@@ -336,6 +336,299 @@ def test_geography_with_complex_wkt(self):
 
     self.assertEqual(usertype.__annotations__, expected_annotations)
 
+  def test_date_type_support(self):
+    """Test that DATE type is properly supported in schema conversion."""
+    fields = [
+        bigquery.TableFieldSchema(
+            name='birth_date', type='DATE', mode="NULLABLE"),
+        bigquery.TableFieldSchema(name='dates', type='DATE', mode="REPEATED"),
+        bigquery.TableFieldSchema(
+            name='required_date', type='DATE', mode="REQUIRED")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    expected_annotations = {
+        'birth_date': typing.Optional[str],
+        'dates': typing.Sequence[str],
+        'required_date': str
+    }
+
+    self.assertEqual(usertype.__annotations__, expected_annotations)
+
+  def test_date_in_bq_to_python_types_mapping(self):
+    """Test that DATE is included in BIG_QUERY_TO_PYTHON_TYPES mapping."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BIG_QUERY_TO_PYTHON_TYPES
+
+    self.assertIn("DATE", BIG_QUERY_TO_PYTHON_TYPES)
+    self.assertEqual(BIG_QUERY_TO_PYTHON_TYPES["DATE"], str)
+
+  def test_date_field_type_conversion(self):
+    """Test bq_field_to_type function with DATE fields."""
+    from apache_beam.io.gcp.bigquery_schema_tools import bq_field_to_type
+
+    # Test required DATE field
+    result = bq_field_to_type("DATE", "REQUIRED")
+    self.assertEqual(result, str)
+
+    # Test nullable DATE field
+    result = bq_field_to_type("DATE", "NULLABLE")
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test repeated DATE field
+    result = bq_field_to_type("DATE", "REPEATED")
+    self.assertEqual(result, typing.Sequence[str])
+
+    # Test DATE field with None mode (should default to nullable)
+    result = bq_field_to_type("DATE", None)
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test DATE field with empty mode (should default to nullable)
+    result = bq_field_to_type("DATE", "")
+    self.assertEqual(result, typing.Optional[str])
+
+  def test_convert_to_usertype_with_date(self):
+    """Test convert_to_usertype function with DATE fields."""
+    schema = bigquery.TableSchema(
+        fields=[
+            bigquery.TableFieldSchema(
+                name='id', type='INTEGER', mode="REQUIRED"),
+            bigquery.TableFieldSchema(
+                name='birth_date', type='DATE', mode="NULLABLE"),
+            bigquery.TableFieldSchema(
+                name='name', type='STRING', mode="REQUIRED")
+        ])
+
+    conversion_transform = bigquery_schema_tools.convert_to_usertype(schema)
+
+    # Verify the transform is created successfully
+    self.assertIsNotNone(conversion_transform)
+
+    # The transform should be a ParDo with BeamSchemaConversionDoFn
+    self.assertIsInstance(conversion_transform, beam.ParDo)
+
+  def test_beam_schema_conversion_dofn_with_date(self):
+    """Test BeamSchemaConversionDoFn with DATE data."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BeamSchemaConversionDoFn
+
+    # Create a user type with DATE field
+    fields = [
+        bigquery.TableFieldSchema(name='id', type='INTEGER', mode="REQUIRED"),
+        bigquery.TableFieldSchema(
+            name='birth_date', type='DATE', mode="NULLABLE")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    # Create the DoFn
+    dofn = BeamSchemaConversionDoFn(usertype)
+
+    # Test processing a dictionary with DATE data
+    input_dict = {'id': 1, 'birth_date': '2021-01-15'}
+
+    results = list(dofn.process(input_dict))
+    self.assertEqual(len(results), 1)
+
+    result = results[0]
+    self.assertEqual(result.id, 1)
+    self.assertEqual(result.birth_date, '2021-01-15')
+
+  def test_datetime_type_support(self):
+    """Test that DATETIME type is properly supported in schema conversion."""
+    fields = [
+        bigquery.TableFieldSchema(
+            name='event_time', type='DATETIME', mode="NULLABLE"),
+        bigquery.TableFieldSchema(
+            name='timestamps', type='DATETIME', mode="REPEATED"),
+        bigquery.TableFieldSchema(
+            name='required_time', type='DATETIME', mode="REQUIRED")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    expected_annotations = {
+        'event_time': typing.Optional[str],
+        'timestamps': typing.Sequence[str],
+        'required_time': str
+    }
+
+    self.assertEqual(usertype.__annotations__, expected_annotations)
+
+  def test_datetime_in_bq_to_python_types_mapping(self):
+    """Test that DATETIME is included in BIG_QUERY_TO_PYTHON_TYPES mapping."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BIG_QUERY_TO_PYTHON_TYPES
+
+    self.assertIn("DATETIME", BIG_QUERY_TO_PYTHON_TYPES)
+    self.assertEqual(BIG_QUERY_TO_PYTHON_TYPES["DATETIME"], str)
+
+  def test_datetime_field_type_conversion(self):
+    """Test bq_field_to_type function with DATETIME fields."""
+    from apache_beam.io.gcp.bigquery_schema_tools import bq_field_to_type
+
+    # Test required DATETIME field
+    result = bq_field_to_type("DATETIME", "REQUIRED")
+    self.assertEqual(result, str)
+
+    # Test nullable DATETIME field
+    result = bq_field_to_type("DATETIME", "NULLABLE")
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test repeated DATETIME field
+    result = bq_field_to_type("DATETIME", "REPEATED")
+    self.assertEqual(result, typing.Sequence[str])
+
+    # Test DATETIME field with None mode (should default to nullable)
+    result = bq_field_to_type("DATETIME", None)
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test DATETIME field with empty mode (should default to nullable)
+    result = bq_field_to_type("DATETIME", "")
+    self.assertEqual(result, typing.Optional[str])
+
+  def test_convert_to_usertype_with_datetime(self):
+    """Test convert_to_usertype function with DATETIME fields."""
+    schema = bigquery.TableSchema(
+        fields=[
+            bigquery.TableFieldSchema(
+                name='id', type='INTEGER', mode="REQUIRED"),
+            bigquery.TableFieldSchema(
+                name='event_time', type='DATETIME', mode="NULLABLE"),
+            bigquery.TableFieldSchema(
+                name='name', type='STRING', mode="REQUIRED")
+        ])
+
+    conversion_transform = bigquery_schema_tools.convert_to_usertype(schema)
+
+    # Verify the transform is created successfully
+    self.assertIsNotNone(conversion_transform)
+
+    # The transform should be a ParDo with BeamSchemaConversionDoFn
+    self.assertIsInstance(conversion_transform, beam.ParDo)
+
+  def test_beam_schema_conversion_dofn_with_datetime(self):
+    """Test BeamSchemaConversionDoFn with DATETIME data."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BeamSchemaConversionDoFn
+
+    # Create a user type with DATETIME field
+    fields = [
+        bigquery.TableFieldSchema(name='id', type='INTEGER', mode="REQUIRED"),
+        bigquery.TableFieldSchema(
+            name='event_time', type='DATETIME', mode="NULLABLE")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    # Create the DoFn
+    dofn = BeamSchemaConversionDoFn(usertype)
+
+    # Test processing a dictionary with DATETIME data
+    input_dict = {'id': 1, 'event_time': '2021-01-15T10:30:00'}
+
+    results = list(dofn.process(input_dict))
+    self.assertEqual(len(results), 1)
+
+    result = results[0]
+    self.assertEqual(result.id, 1)
+    self.assertEqual(result.event_time, '2021-01-15T10:30:00')
+
+  def test_json_type_support(self):
+    """Test that JSON type is properly supported in schema conversion."""
+    fields = [
+        bigquery.TableFieldSchema(name='data', type='JSON', mode="NULLABLE"),
+        bigquery.TableFieldSchema(name='items', type='JSON', mode="REPEATED"),
+        bigquery.TableFieldSchema(
+            name='required_data', type='JSON', mode="REQUIRED")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    expected_annotations = {
+        'data': typing.Optional[str],
+        'items': typing.Sequence[str],
+        'required_data': str
+    }
+
+    self.assertEqual(usertype.__annotations__, expected_annotations)
+
+  def test_json_in_bq_to_python_types_mapping(self):
+    """Test that JSON is included in BIG_QUERY_TO_PYTHON_TYPES mapping."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BIG_QUERY_TO_PYTHON_TYPES
+
+    self.assertIn("JSON", BIG_QUERY_TO_PYTHON_TYPES)
+    self.assertEqual(BIG_QUERY_TO_PYTHON_TYPES["JSON"], str)
+
+  def test_json_field_type_conversion(self):
+    """Test bq_field_to_type function with JSON fields."""
+    from apache_beam.io.gcp.bigquery_schema_tools import bq_field_to_type
+
+    # Test required JSON field
+    result = bq_field_to_type("JSON", "REQUIRED")
+    self.assertEqual(result, str)
+
+    # Test nullable JSON field
+    result = bq_field_to_type("JSON", "NULLABLE")
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test repeated JSON field
+    result = bq_field_to_type("JSON", "REPEATED")
+    self.assertEqual(result, typing.Sequence[str])
+
+    # Test JSON field with None mode (should default to nullable)
+    result = bq_field_to_type("JSON", None)
+    self.assertEqual(result, typing.Optional[str])
+
+    # Test JSON field with empty mode (should default to nullable)
+    result = bq_field_to_type("JSON", "")
+    self.assertEqual(result, typing.Optional[str])
+
+  def test_convert_to_usertype_with_json(self):
+    """Test convert_to_usertype function with JSON fields."""
+    schema = bigquery.TableSchema(
+        fields=[
+            bigquery.TableFieldSchema(
+                name='id', type='INTEGER', mode="REQUIRED"),
+            bigquery.TableFieldSchema(
+                name='data', type='JSON', mode="NULLABLE"),
+            bigquery.TableFieldSchema(
+                name='name', type='STRING', mode="REQUIRED")
+        ])
+
+    conversion_transform = bigquery_schema_tools.convert_to_usertype(schema)
+
+    # Verify the transform is created successfully
+    self.assertIsNotNone(conversion_transform)
+
+    # The transform should be a ParDo with BeamSchemaConversionDoFn
+    self.assertIsInstance(conversion_transform, beam.ParDo)
+
+  def test_beam_schema_conversion_dofn_with_json(self):
+    """Test BeamSchemaConversionDoFn with JSON data."""
+    from apache_beam.io.gcp.bigquery_schema_tools import BeamSchemaConversionDoFn
+
+    # Create a user type with JSON field
+    fields = [
+        bigquery.TableFieldSchema(name='id', type='INTEGER', mode="REQUIRED"),
+        bigquery.TableFieldSchema(name='data', type='JSON', mode="NULLABLE")
+    ]
+    schema = bigquery.TableSchema(fields=fields)
+    usertype = bigquery_schema_tools.generate_user_type_from_bq_schema(schema)
+
+    # Create the DoFn
+    dofn = BeamSchemaConversionDoFn(usertype)
+
+    # Test processing a dictionary with JSON data
+    input_dict = {'id': 1, 'data': '{"key": "value", "count": 42}'}
+
+    results = list(dofn.process(input_dict))
+    self.assertEqual(len(results), 1)
+
+    result = results[0]
+    self.assertEqual(result.id, 1)
+    self.assertEqual(result.data, '{"key": "value", "count": 42}')
+
 
 if __name__ == '__main__':
   logging.getLogger().setLevel(logging.INFO)
diff --git a/sdks/python/apache_beam/io/gcp/bigquery_tools.py b/sdks/python/apache_beam/io/gcp/bigquery_tools.py
index ddab941f9278..4dd0ab10cf81 100644
--- a/sdks/python/apache_beam/io/gcp/bigquery_tools.py
+++ b/sdks/python/apache_beam/io/gcp/bigquery_tools.py
@@ -124,6 +124,9 @@
     "NUMERIC": decimal.Decimal,
     "TIMESTAMP": apache_beam.utils.timestamp.Timestamp,
     "GEOGRAPHY": str,
+    "DATE": str,
+    "DATETIME": str,
+    "JSON": str,
 }
 
 
diff --git a/sdks/python/apache_beam/io/gcp/bigquery_tools_test.py b/sdks/python/apache_beam/io/gcp/bigquery_tools_test.py
index 2594e6728e0e..26785498ea5e 100644
--- a/sdks/python/apache_beam/io/gcp/bigquery_tools_test.py
+++ b/sdks/python/apache_beam/io/gcp/bigquery_tools_test.py
@@ -1016,7 +1016,8 @@ def test_dict_to_beam_row_repeated_nested_record(self):
 class TestBeamTypehintFromSchema(unittest.TestCase):
   EXPECTED_TYPEHINTS = [("str", str), ("bool", bool), ("bytes", bytes),
                         ("int", np.int64), ("float", np.float64),
-                        ("numeric", decimal.Decimal), ("timestamp", Timestamp)]
+                        ("numeric", decimal.Decimal), ("timestamp", Timestamp),
+                        ("date", str), ("datetime", str), ("json", str)]
 
   def get_schema_fields_with_mode(self, mode):
     return [{
@@ -1033,6 +1034,12 @@ def get_schema_fields_with_mode(self, mode):
         "name": "numeric", "type": "NUMERIC", "mode": mode
     }, {
         "name": "timestamp", "type": "TIMESTAMP", "mode": mode
+    }, {
+        "name": "date", "type": "DATE", "mode": mode
+    }, {
+        "name": "datetime", "type": "DATETIME", "mode": mode
+    }, {
+        "name": "json", "type": "JSON", "mode": mode
     }]
 
   def test_typehints_from_required_schema(self):