diff --git a/devel/Makefile b/devel/Makefile
--- a/devel/Makefile
+++ b/devel/Makefile
@@ -1632,6 +1632,7 @@
     SUBDIR += onetbb
     SUBDIR += oniguruma
     SUBDIR += open-beagle
+    SUBDIR += open62541
     SUBDIR += opencl
     SUBDIR += opencl-clang
     SUBDIR += opencvs
diff --git a/devel/open62541/Makefile b/devel/open62541/Makefile
new file mode 100644
--- /dev/null
+++ b/devel/open62541/Makefile
@@ -0,0 +1,24 @@
+PORTNAME=	open62541
+DISTVERSIONPREFIX=	v
+DISTVERSION=	1.3.3
+CATEGORIES=	devel
+
+MAINTAINER=	nsonack@outlook.com
+COMMENT=	Open source implementation of OPC UA
+
+LICENSE=	MPL20
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+USES=		cmake python shebangfix
+USE_GITHUB=	yes
+USE_LDCONFIG=	yes
+
+CMAKE_ON=	BUILD_SHARED_LIBS
+SHEBANG_GLOB=	*.py
+BINARY_ALIAS=	python3=${PYTHON_CMD}
+
+post-install:
+	${RMDIR} ${STAGEDIR}${DATADIR}/tools/ua-nodeset
+	${RMDIR} ${STAGEDIR}${DATADIR}/tools/nodeset_compiler/__pycache__
+
+.include <bsd.port.mk>
diff --git a/devel/open62541/distinfo b/devel/open62541/distinfo
new file mode 100644
--- /dev/null
+++ b/devel/open62541/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1660839750
+SHA256 (open62541-open62541-v1.3.3_GH0.tar.gz) = 52c049c0f107b4cc382c9e480d677a6360cdd96c472f84689af91b423bd108cb
+SIZE (open62541-open62541-v1.3.3_GH0.tar.gz) = 3866193
diff --git a/devel/open62541/pkg-descr b/devel/open62541/pkg-descr
new file mode 100644
--- /dev/null
+++ b/devel/open62541/pkg-descr
@@ -0,0 +1,8 @@
+open62541 is an open source and free implementation of OPC UA (OPC
+Unified Architecture) written in the common subset of the C99 and
+C++98 languages. The library implements the OPC UA binary protocol
+stack as well as a client and server SDK. The final server binaries
+can be well under 100kb, depending on the selected features and the
+size of the information model.
+
+WWW: http://open62541.org/
diff --git a/devel/open62541/pkg-plist b/devel/open62541/pkg-plist
new file mode 100644
--- /dev/null
+++ b/devel/open62541/pkg-plist
@@ -0,0 +1,86 @@
+include/aa_tree.h
+include/ms_stdint.h
+include/open62541/architecture_definitions.h
+include/open62541/architecture_functions.h
+include/open62541/client.h
+include/open62541/client_config_default.h
+include/open62541/client_highlevel.h
+include/open62541/client_highlevel_async.h
+include/open62541/client_subscriptions.h
+include/open62541/common.h
+include/open62541/config.h
+include/open62541/network_tcp.h
+include/open62541/nodeids.h
+include/open62541/plugin/accesscontrol.h
+include/open62541/plugin/accesscontrol_default.h
+include/open62541/plugin/log.h
+include/open62541/plugin/log_stdout.h
+include/open62541/plugin/log_syslog.h
+include/open62541/plugin/network.h
+include/open62541/plugin/nodestore.h
+include/open62541/plugin/nodestore_default.h
+include/open62541/plugin/pki.h
+include/open62541/plugin/pki_default.h
+include/open62541/plugin/pubsub.h
+include/open62541/plugin/securitypolicy.h
+include/open62541/plugin/securitypolicy_default.h
+include/open62541/posix/ua_architecture.h
+include/open62541/server.h
+include/open62541/server_config_default.h
+include/open62541/server_pubsub.h
+include/open62541/statuscodes.h
+include/open62541/types.h
+include/open62541/types_generated.h
+include/open62541/types_generated_handling.h
+include/open62541/util.h
+include/ziptree.h
+lib/cmake/open62541/open62541Config.cmake
+lib/cmake/open62541/open62541ConfigVersion.cmake
+lib/cmake/open62541/open62541Macros.cmake
+lib/cmake/open62541/open62541Targets-release.cmake
+lib/cmake/open62541/open62541Targets.cmake
+lib/libopen62541.so
+lib/libopen62541.so.1
+lib/libopen62541.so.1.3.3
+%%DATADIR%%/tools/certs/create_self-signed.py
+%%DATADIR%%/tools/certs/localhost.cnf
+%%DATADIR%%/tools/generate_datatypes.py
+%%DATADIR%%/tools/generate_nodeid_header.py
+%%DATADIR%%/tools/generate_statuscode_descriptions.py
+%%DATADIR%%/tools/nodeset_compiler/NodeID_NS0_Base.txt
+%%DATADIR%%/tools/nodeset_compiler/README.md
+%%DATADIR%%/tools/nodeset_compiler/__init__.py
+%%DATADIR%%/tools/nodeset_compiler/backend_graphviz.py
+%%DATADIR%%/tools/nodeset_compiler/backend_open62541.py
+%%DATADIR%%/tools/nodeset_compiler/backend_open62541_datatypes.py
+%%DATADIR%%/tools/nodeset_compiler/backend_open62541_nodes.py
+%%DATADIR%%/tools/nodeset_compiler/backend_open62541_typedefinitions.py
+%%DATADIR%%/tools/nodeset_compiler/datatypes.py
+%%DATADIR%%/tools/nodeset_compiler/nodes.py
+%%DATADIR%%/tools/nodeset_compiler/nodeset.py
+%%DATADIR%%/tools/nodeset_compiler/nodeset_compiler.py
+%%DATADIR%%/tools/nodeset_compiler/nodeset_testing.py
+%%DATADIR%%/tools/nodeset_compiler/opaque_type_mapping.py
+%%DATADIR%%/tools/nodeset_compiler/type_parser.py
+%%DATADIR%%/tools/schema/Custom.Opc.Ua.Transport.bsd
+%%DATADIR%%/tools/schema/NodeIds.csv
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.DiagnosticsMinimal.xml
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.EventsMinimal.xml
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.HistorizingMinimal.xml
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.Part8_Subset.xml
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.PubSubMinimal.xml
+%%DATADIR%%/tools/schema/Opc.Ua.NodeSet2.Reduced.xml
+%%DATADIR%%/tools/schema/Opc.Ua.Types.bsd
+%%DATADIR%%/tools/schema/StatusCode.csv
+%%DATADIR%%/tools/schema/datatypes_dataaccess.txt
+%%DATADIR%%/tools/schema/datatypes_diagnostics.txt
+%%DATADIR%%/tools/schema/datatypes_discovery.txt
+%%DATADIR%%/tools/schema/datatypes_events.txt
+%%DATADIR%%/tools/schema/datatypes_historizing.txt
+%%DATADIR%%/tools/schema/datatypes_method.txt
+%%DATADIR%%/tools/schema/datatypes_minimal.txt
+%%DATADIR%%/tools/schema/datatypes_pubsub.txt
+%%DATADIR%%/tools/schema/datatypes_query.txt
+%%DATADIR%%/tools/schema/datatypes_subscriptions.txt
+%%DATADIR%%/tools/schema/datatypes_transport.txt
+%%DATADIR%%/tools/schema/datatypes_typedescription.txt