diff --git a/superset/db_engine_specs/base.py b/superset/db_engine_specs/base.py
index 7eadb4a94d56..c7d9633b6ed2 100644
--- a/superset/db_engine_specs/base.py
+++ b/superset/db_engine_specs/base.py
@@ -469,6 +469,11 @@ def normalize_custom_sql_metric(cls, expression: str) -> str:
             types.SmallInteger(),
             GenericDataType.NUMERIC,
         ),
+        (
+            re.compile(r"^tinyint", re.IGNORECASE),
+            types.SmallInteger(),
+            GenericDataType.NUMERIC,
+        ),
         (
             re.compile(r"^int(eger)?", re.IGNORECASE),
             types.Integer(),
diff --git a/tests/unit_tests/db_engine_specs/test_base.py b/tests/unit_tests/db_engine_specs/test_base.py
index 6eba3e68af1e..c51f12288985 100644
--- a/tests/unit_tests/db_engine_specs/test_base.py
+++ b/tests/unit_tests/db_engine_specs/test_base.py
@@ -168,6 +168,7 @@ def test_cte_query_parsing(original: types.TypeEngine, expected: str) -> None:
     "native_type,sqla_type,attrs,generic_type,is_dttm",
     [
         ("SMALLINT", types.SmallInteger, None, GenericDataType.NUMERIC, False),
+        ("TINYINT", types.SmallInteger, None, GenericDataType.NUMERIC, False),
         ("INTEGER", types.Integer, None, GenericDataType.NUMERIC, False),
         ("BIGINT", types.BigInteger, None, GenericDataType.NUMERIC, False),
         ("DECIMAL", types.Numeric, None, GenericDataType.NUMERIC, False),
diff --git a/tests/unit_tests/db_engine_specs/test_duckdb.py b/tests/unit_tests/db_engine_specs/test_duckdb.py
index 7ba1413f5034..41c77fedeab8 100644
--- a/tests/unit_tests/db_engine_specs/test_duckdb.py
+++ b/tests/unit_tests/db_engine_specs/test_duckdb.py
@@ -142,6 +142,7 @@ def test_column_type_recognition() -> None:
         "INTEGER",
         "BIGINT",
         "SMALLINT",
+        "TINYINT",
         # DuckDB-specific unsigned types
         "HUGEINT",
         "UBIGINT",
@@ -158,12 +159,6 @@ def test_column_type_recognition() -> None:
             f"got {col_spec.generic_type}"
         )
 
-    # Test that TINYINT (non-unsigned) is also recognized
-    # Note: TINYINT is not in the default mappings, but should be handled
-    col_spec = DuckDBEngineSpec.get_column_spec("TINYINT")
-    # TINYINT matches the pattern "^int" so it should be recognized
-    assert col_spec is None, "TINYINT doesn't match any patterns"
-
 
 def test_motherduck_impersonation(mocker: MockerFixture) -> None:
     """