diff --git a/devel/Makefile b/devel/Makefile
--- a/devel/Makefile
+++ b/devel/Makefile
@@ -5385,6 +5385,7 @@
     SUBDIR += py-testscenarios
     SUBDIR += py-testtools
     SUBDIR += py-thefuzz
+    SUBDIR += py-threadpoolctl
     SUBDIR += py-threema-msgapi
     SUBDIR += py-thrift
     SUBDIR += py-thriftpy2
diff --git a/devel/py-threadpoolctl/Makefile b/devel/py-threadpoolctl/Makefile
new file mode 100644
--- /dev/null
+++ b/devel/py-threadpoolctl/Makefile
@@ -0,0 +1,50 @@
+# Created by: thierry@pompo.net
+
+PORTNAME=	threadpoolctl
+PORTVERSION=	3.1.0
+CATEGORIES=	devel python
+MASTER_SITES=	CHEESESHOP
+PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
+
+MAINTAINER=	thierry@FreeBSD.org
+COMMENT=	Thread-pool Controls for Python
+
+LICENSE=	BSD3CLAUSE
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+#USE_GITHUB=	yes
+#GH_ACCOUNT=	joblib
+
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}build>0:devel/py-build@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}flit-core>0:devel/py-flit-core@${PY_FLAVOR} \
+		${PYTHON_PKGNAMEPREFIX}installer>0:devel/py-installer@${PY_FLAVOR}
+
+OPTIONS_DEFINE=	TEST
+
+USES=		python:3.6-3.9
+
+TEST_DEPENDS=	${PYNUMPY}	\
+		blis>0:math/blis	\
+		${PYTHON_PKGNAMEPREFIX}scipy>0:science/py-scipy@${PY_FLAVOR}
+TEST_USES=	blaslapack:openblas pytest
+TEST_USE=	PYTHON=cython
+TEST_VARS=	PYTEST_ARGS="-vlrxXs --cov=threadpoolctl"	\
+		BLIS_ENABLE_THREADING=yes
+
+NO_ARCH=	yes
+
+do-build:
+	(cd ${WRKSRC} && ${PYTHON_CMD} -m build --wheel --no-isolation)
+
+post-build-TEST-on:
+	(cd ${WRKSRC}/tests/_openmp_test_helper &&	\
+		${PYTHON_CMD} setup_inner.py build_ext -i &&	\
+		${PYTHON_CMD} setup_outer.py build_ext -i &&	\
+		${PYTHON_CMD} setup_nested_prange_blas.py build_ext -i)
+
+do-install:
+	${MKDIR} ${STAGEDIE}${PYTHONPREFIX_SITELIBDIR}
+	(cd ${WRKSRC} &&	\
+	${PYTHON_CMD} -m installer --destdir="${STAGEDIR}" dist/*.whl)
+
+.include <bsd.port.mk>
diff --git a/devel/py-threadpoolctl/distinfo b/devel/py-threadpoolctl/distinfo
new file mode 100644
--- /dev/null
+++ b/devel/py-threadpoolctl/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1655408452
+SHA256 (threadpoolctl-3.1.0.tar.gz) = a335baacfaa4400ae1f0d8e3a58d6674d2f8828e3716bb2802c44955ad391380
+SIZE (threadpoolctl-3.1.0.tar.gz) = 33651
diff --git a/devel/py-threadpoolctl/pkg-descr b/devel/py-threadpoolctl/pkg-descr
new file mode 100644
--- /dev/null
+++ b/devel/py-threadpoolctl/pkg-descr
@@ -0,0 +1,8 @@
+Python helpers to limit the number of threads used in the threadpool-backed of
+common native libraries used for scientific computing and data science (e.g.
+BLAS and OpenMP).
+
+Fine control of the underlying thread-pool size can be useful in workloads that
+involve nested parallelism so as to mitigate oversubscription issues.
+
+WWW: https://github.com/joblib/threadpoolctl
diff --git a/devel/py-threadpoolctl/pkg-plist b/devel/py-threadpoolctl/pkg-plist
new file mode 100644
--- /dev/null
+++ b/devel/py-threadpoolctl/pkg-plist
@@ -0,0 +1,7 @@
+%%PYTHON_SITELIBDIR%%/__pycache__/threadpoolctl%%PYTHON_EXT_SUFFIX%%.opt-1.pyc
+%%PYTHON_SITELIBDIR%%/__pycache__/threadpoolctl%%PYTHON_EXT_SUFFIX%%.pyc
+%%PYTHON_SITELIBDIR%%/threadpoolctl-3.1.0.dist-info/LICENSE
+%%PYTHON_SITELIBDIR%%/threadpoolctl-3.1.0.dist-info/METADATA
+%%PYTHON_SITELIBDIR%%/threadpoolctl-3.1.0.dist-info/RECORD
+%%PYTHON_SITELIBDIR%%/threadpoolctl-3.1.0.dist-info/WHEEL
+%%PYTHON_SITELIBDIR%%/threadpoolctl.py