diff --git a/python/pyarrow/pandas_compat.py b/python/pyarrow/pandas_compat.py
index bb54c3b22c3..a85146a6b78 100644
--- a/python/pyarrow/pandas_compat.py
+++ b/python/pyarrow/pandas_compat.py
@@ -33,7 +33,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pyarrow as pa
 from pyarrow.lib import _pandas_api, frombytes, is_threading_enabled  # noqa
 
diff --git a/python/pyarrow/tests/interchange/test_conversion.py b/python/pyarrow/tests/interchange/test_conversion.py
index 50da6693aff..a584f379738 100644
--- a/python/pyarrow/tests/interchange/test_conversion.py
+++ b/python/pyarrow/tests/interchange/test_conversion.py
@@ -23,7 +23,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    pass
 
 import pyarrow.interchange as pi
 from pyarrow.interchange.column import (
diff --git a/python/pyarrow/tests/interchange/test_interchange_spec.py b/python/pyarrow/tests/interchange/test_interchange_spec.py
index cea694d1c1e..56a424fd57a 100644
--- a/python/pyarrow/tests/interchange/test_interchange_spec.py
+++ b/python/pyarrow/tests/interchange/test_interchange_spec.py
@@ -20,10 +20,11 @@
 import hypothesis.strategies as st
 
 import pytest
+np = None
 try:
     import numpy as np
 except ImportError:
-    np = None
+    pass
 import pyarrow as pa
 import pyarrow.tests.strategies as past
 
diff --git a/python/pyarrow/tests/parquet/common.py b/python/pyarrow/tests/parquet/common.py
index 4f5946649b8..7351a4c3e94 100644
--- a/python/pyarrow/tests/parquet/common.py
+++ b/python/pyarrow/tests/parquet/common.py
@@ -20,7 +20,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 from pyarrow.tests import util
diff --git a/python/pyarrow/tests/parquet/test_basic.py b/python/pyarrow/tests/parquet/test_basic.py
index 67515c5e247..c6fe2942e1f 100644
--- a/python/pyarrow/tests/parquet/test_basic.py
+++ b/python/pyarrow/tests/parquet/test_basic.py
@@ -44,12 +44,12 @@
     from pyarrow.tests.pandas_examples import dataframe_with_lists
     from pyarrow.tests.parquet.common import alltypes_sample
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 # Marks all of the tests in this module
 # Ignore these with pytest ... -m 'not parquet'
diff --git a/python/pyarrow/tests/parquet/test_compliant_nested_type.py b/python/pyarrow/tests/parquet/test_compliant_nested_type.py
index 2345855a332..8a64cd0cab7 100644
--- a/python/pyarrow/tests/parquet/test_compliant_nested_type.py
+++ b/python/pyarrow/tests/parquet/test_compliant_nested_type.py
@@ -32,7 +32,7 @@
 
     from pyarrow.tests.parquet.common import _roundtrip_pandas_dataframe
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_data_types.py b/python/pyarrow/tests/parquet/test_data_types.py
index c546bc1532a..66e12d11b21 100644
--- a/python/pyarrow/tests/parquet/test_data_types.py
+++ b/python/pyarrow/tests/parquet/test_data_types.py
@@ -22,7 +22,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
@@ -44,7 +44,7 @@
                                                dataframe_with_lists)
     from pyarrow.tests.parquet.common import alltypes_sample
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_dataset.py b/python/pyarrow/tests/parquet/test_dataset.py
index b8939443c1d..a162006dc0c 100644
--- a/python/pyarrow/tests/parquet/test_dataset.py
+++ b/python/pyarrow/tests/parquet/test_dataset.py
@@ -24,7 +24,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 import unittest.mock as mock
 
@@ -48,7 +48,7 @@
     import pandas.testing as tm
 
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_datetime.py b/python/pyarrow/tests/parquet/test_datetime.py
index b89fd97cb91..62904937eb5 100644
--- a/python/pyarrow/tests/parquet/test_datetime.py
+++ b/python/pyarrow/tests/parquet/test_datetime.py
@@ -22,7 +22,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
@@ -41,7 +41,7 @@
 
     from pyarrow.tests.parquet.common import _roundtrip_pandas_dataframe
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_metadata.py b/python/pyarrow/tests/parquet/test_metadata.py
index 148bfebaa67..d8fafde185f 100644
--- a/python/pyarrow/tests/parquet/test_metadata.py
+++ b/python/pyarrow/tests/parquet/test_metadata.py
@@ -23,7 +23,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
@@ -44,7 +44,7 @@
 
     from pyarrow.tests.parquet.common import alltypes_sample
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_pandas.py b/python/pyarrow/tests/parquet/test_pandas.py
index 703232b7cac..3bb4842decb 100644
--- a/python/pyarrow/tests/parquet/test_pandas.py
+++ b/python/pyarrow/tests/parquet/test_pandas.py
@@ -21,7 +21,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
@@ -44,7 +44,7 @@
     from pyarrow.tests.parquet.common import (_roundtrip_pandas_dataframe,
                                               alltypes_sample)
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_parquet_file.py b/python/pyarrow/tests/parquet/test_parquet_file.py
index 24ffe612ef7..10a2b7e1de7 100644
--- a/python/pyarrow/tests/parquet/test_parquet_file.py
+++ b/python/pyarrow/tests/parquet/test_parquet_file.py
@@ -38,7 +38,7 @@
 
     from pyarrow.tests.parquet.common import alltypes_sample
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/parquet/test_parquet_writer.py b/python/pyarrow/tests/parquet/test_parquet_writer.py
index d1e9e874ba1..8f163dfc0b5 100644
--- a/python/pyarrow/tests/parquet/test_parquet_writer.py
+++ b/python/pyarrow/tests/parquet/test_parquet_writer.py
@@ -33,7 +33,7 @@
     import pandas.testing as tm
 
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 # Marks all of the tests in this module
diff --git a/python/pyarrow/tests/strategies.py b/python/pyarrow/tests/strategies.py
index 450cce74f1d..243815c59f7 100644
--- a/python/pyarrow/tests/strategies.py
+++ b/python/pyarrow/tests/strategies.py
@@ -24,15 +24,15 @@
 try:
     import hypothesis.extra.numpy as npst
 except ImportError:
-    npst = None
+    npst = None  # type: ignore[assignment]
 try:
     import hypothesis.extra.pytz as tzst
 except ImportError:
-    tzst = None
+    tzst = None  # type: ignore[assignment]
 try:
     import zoneinfo
 except ImportError:
-    zoneinfo = None
+    zoneinfo = None  # type: ignore[assignment]
 if sys.platform == 'win32':
     try:
         import tzdata  # noqa:F401
@@ -41,7 +41,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 
diff --git a/python/pyarrow/tests/test_adhoc_memory_leak.py b/python/pyarrow/tests/test_adhoc_memory_leak.py
index 76a766984da..9f61bc7ddfe 100644
--- a/python/pyarrow/tests/test_adhoc_memory_leak.py
+++ b/python/pyarrow/tests/test_adhoc_memory_leak.py
@@ -20,7 +20,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    pass
 import pyarrow as pa
 
 import pyarrow.tests.util as test_util
diff --git a/python/pyarrow/tests/test_array.py b/python/pyarrow/tests/test_array.py
index 009ab1e849b..ea9085025ec 100644
--- a/python/pyarrow/tests/test_array.py
+++ b/python/pyarrow/tests/test_array.py
@@ -30,7 +30,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 import pyarrow.tests.strategies as past
diff --git a/python/pyarrow/tests/test_cffi.py b/python/pyarrow/tests/test_cffi.py
index 84290a6b880..2d0ff8b45f1 100644
--- a/python/pyarrow/tests/test_cffi.py
+++ b/python/pyarrow/tests/test_cffi.py
@@ -24,7 +24,7 @@
 try:
     from pyarrow.cffi import ffi
 except ImportError:
-    ffi = None
+    ffi = None  # type: ignore[assignment]
 
 import pytest
 
@@ -32,7 +32,7 @@
     import pandas as pd
     import pandas.testing as tm
 except ImportError:
-    pd = tm = None
+    pd = tm = None  # type: ignore[assignment]
 
 
 needs_cffi = pytest.mark.skipif(ffi is None,
diff --git a/python/pyarrow/tests/test_compute.py b/python/pyarrow/tests/test_compute.py
index ad61dbc48a7..b2fdf7239f6 100644
--- a/python/pyarrow/tests/test_compute.py
+++ b/python/pyarrow/tests/test_compute.py
@@ -31,12 +31,12 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 try:
     import pandas as pd
 except ImportError:
-    pd = None
+    pd = None  # type: ignore[assignment]
 
 import pyarrow as pa
 import pyarrow.compute as pc
diff --git a/python/pyarrow/tests/test_convert_builtin.py b/python/pyarrow/tests/test_convert_builtin.py
index 07286125c4c..468bddf58cb 100644
--- a/python/pyarrow/tests/test_convert_builtin.py
+++ b/python/pyarrow/tests/test_convert_builtin.py
@@ -27,7 +27,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 from pyarrow.pandas_compat import _pandas_api  # noqa
 import pyarrow as pa
diff --git a/python/pyarrow/tests/test_dataset.py b/python/pyarrow/tests/test_dataset.py
index e7365643b84..d1cd3f6b8a1 100644
--- a/python/pyarrow/tests/test_dataset.py
+++ b/python/pyarrow/tests/test_dataset.py
@@ -32,7 +32,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
@@ -49,7 +49,7 @@
 try:
     import pandas as pd
 except ImportError:
-    pd = None
+    pd = None  # type: ignore[assignment]
 
 try:
     import pyarrow.dataset as ds
diff --git a/python/pyarrow/tests/test_extension_type.py b/python/pyarrow/tests/test_extension_type.py
index ebac37e862b..55b3775339e 100644
--- a/python/pyarrow/tests/test_extension_type.py
+++ b/python/pyarrow/tests/test_extension_type.py
@@ -27,7 +27,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 from pyarrow.vendored.version import Version
diff --git a/python/pyarrow/tests/test_feather.py b/python/pyarrow/tests/test_feather.py
index 054bf920b26..60efd496e7d 100644
--- a/python/pyarrow/tests/test_feather.py
+++ b/python/pyarrow/tests/test_feather.py
@@ -26,7 +26,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 import pyarrow.tests.strategies as past
diff --git a/python/pyarrow/tests/test_flight.py b/python/pyarrow/tests/test_flight.py
index 7f89c115324..39fcb7af9c3 100644
--- a/python/pyarrow/tests/test_flight.py
+++ b/python/pyarrow/tests/test_flight.py
@@ -32,7 +32,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 import pyarrow as pa
 
diff --git a/python/pyarrow/tests/test_io.py b/python/pyarrow/tests/test_io.py
index a6d3546e57c..b1ec7674f87 100644
--- a/python/pyarrow/tests/test_io.py
+++ b/python/pyarrow/tests/test_io.py
@@ -33,7 +33,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 from pyarrow.util import guid
 from pyarrow import Codec
diff --git a/python/pyarrow/tests/test_ipc.py b/python/pyarrow/tests/test_ipc.py
index b3b3367223d..26df224ee49 100644
--- a/python/pyarrow/tests/test_ipc.py
+++ b/python/pyarrow/tests/test_ipc.py
@@ -28,7 +28,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 from pyarrow.tests.util import changed_environ, invoke_script
diff --git a/python/pyarrow/tests/test_json.py b/python/pyarrow/tests/test_json.py
index c3f9fe333bd..dffaa6f8ad3 100644
--- a/python/pyarrow/tests/test_json.py
+++ b/python/pyarrow/tests/test_json.py
@@ -27,7 +27,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 
 import pyarrow as pa
diff --git a/python/pyarrow/tests/test_pandas.py b/python/pyarrow/tests/test_pandas.py
index ceea2527da0..6ceeeded646 100644
--- a/python/pyarrow/tests/test_pandas.py
+++ b/python/pyarrow/tests/test_pandas.py
@@ -38,7 +38,7 @@
             VisibleDeprecationWarning as _np_VisibleDeprecationWarning
         )
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 from pyarrow.pandas_compat import get_logical_type, _pandas_api
 from pyarrow.tests.util import invoke_script, random_ascii, rands
diff --git a/python/pyarrow/tests/test_scalars.py b/python/pyarrow/tests/test_scalars.py
index 0f62dd98f82..f48761b1918 100644
--- a/python/pyarrow/tests/test_scalars.py
+++ b/python/pyarrow/tests/test_scalars.py
@@ -24,7 +24,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 import pyarrow.compute as pc
diff --git a/python/pyarrow/tests/test_schema.py b/python/pyarrow/tests/test_schema.py
index a1197ed2d08..6d1ff431819 100644
--- a/python/pyarrow/tests/test_schema.py
+++ b/python/pyarrow/tests/test_schema.py
@@ -23,7 +23,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pyarrow as pa
 
 import pyarrow.tests.util as test_util
diff --git a/python/pyarrow/tests/test_sparse_tensor.py b/python/pyarrow/tests/test_sparse_tensor.py
index eca8090d77a..27974b80f80 100644
--- a/python/pyarrow/tests/test_sparse_tensor.py
+++ b/python/pyarrow/tests/test_sparse_tensor.py
@@ -26,12 +26,10 @@
 import pyarrow as pa
 
 try:
+    import scipy
     from scipy.sparse import csr_array, coo_array, csr_matrix, coo_matrix
 except ImportError:
-    coo_matrix = None
-    csr_matrix = None
-    csr_array = None
-    coo_array = None
+    scipy = None  # type: ignore[assignment]
 
 try:
     import sparse
@@ -401,7 +399,7 @@ def test_dense_to_sparse_tensor(dtype_str, arrow_type, sparse_tensor_type):
     assert np.array_equal(array, result_array)
 
 
-@pytest.mark.skipif(not coo_matrix, reason="requires scipy")
+@pytest.mark.skipif(not scipy, reason="requires scipy")
 @pytest.mark.parametrize('sparse_object', (coo_array, coo_matrix))
 @pytest.mark.parametrize('dtype_str,arrow_type', scipy_type_pairs)
 def test_sparse_coo_tensor_scipy_roundtrip(dtype_str, arrow_type,
@@ -443,7 +441,7 @@ def test_sparse_coo_tensor_scipy_roundtrip(dtype_str, arrow_type,
     assert out_scipy_matrix.has_canonical_format
 
 
-@pytest.mark.skipif(not csr_matrix, reason="requires scipy")
+@pytest.mark.skipif(not scipy, reason="requires scipy")
 @pytest.mark.parametrize('sparse_object', (csr_array, csr_matrix))
 @pytest.mark.parametrize('dtype_str,arrow_type', scipy_type_pairs)
 def test_sparse_csr_matrix_scipy_roundtrip(dtype_str, arrow_type,
diff --git a/python/pyarrow/tests/test_table.py b/python/pyarrow/tests/test_table.py
index b65fb7d952c..ead5cbaddc5 100644
--- a/python/pyarrow/tests/test_table.py
+++ b/python/pyarrow/tests/test_table.py
@@ -23,7 +23,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 import pytest
 import pyarrow as pa
 import pyarrow.compute as pc
diff --git a/python/pyarrow/tests/test_types.py b/python/pyarrow/tests/test_types.py
index 60a713eb717..80193a69eb1 100644
--- a/python/pyarrow/tests/test_types.py
+++ b/python/pyarrow/tests/test_types.py
@@ -27,13 +27,13 @@
 try:
     import hypothesis.extra.pytz as tzst
 except ImportError:
-    tzst = None
+    tzst = None  # type: ignore[assignment]
 import weakref
 
 try:
     import numpy as np
 except ImportError:
-    np = None
+    pass
 import pyarrow as pa
 import pyarrow.types as types
 import pyarrow.tests.strategies as past
@@ -1322,6 +1322,7 @@ def test_field_modified_copies():
     assert f0.equals(f0_)
 
 
+@pytest.mark.numpy
 def test_is_integer_value():
     assert pa.types.is_integer_value(1)
     if np is not None:
diff --git a/python/pyarrow/tests/test_udf.py b/python/pyarrow/tests/test_udf.py
index 93004a30618..dbc30867971 100644
--- a/python/pyarrow/tests/test_udf.py
+++ b/python/pyarrow/tests/test_udf.py
@@ -21,7 +21,7 @@
 try:
     import numpy as np
 except ImportError:
-    np = None
+    np = None  # type: ignore[assignment]
 
 import pyarrow as pa
 from pyarrow import compute as pc