diff --git a/science/Makefile b/science/Makefile
index fb0f2f807387d..828d714b017eb 100644
--- a/science/Makefile
+++ b/science/Makefile
@@ -224,6 +224,7 @@
     SUBDIR += opensim-core
     SUBDIR += opensph
     SUBDIR += opsin
+    SUBDIR += optench
     SUBDIR += orthanc
     SUBDIR += orthanc-dicomweb
     SUBDIR += orthanc-mysql
diff --git a/science/optench/Makefile b/science/optench/Makefile
new file mode 100644
index 0000000000000..df3f112805f08
--- /dev/null
+++ b/science/optench/Makefile
@@ -0,0 +1,28 @@
+PORTNAME=	optench
+DISTVERSION=	1.2.5
+CATEGORIES=	science
+
+MAINTAINER=	thierry@FreeBSD.org
+COMMENT=	Virtual optical bench
+WWW=		https://amini-allight.org/optench
+
+LICENSE=	GPLv3
+
+USES=		cmake compiler:c++20-lang desktop-file-utils gl localbase	\
+		qt:6 shared-mime-info tar:bz2
+USE_GL=		egl opengl
+USE_QT=		base
+LDFLAGS+=	-L${QT_LIBDIR}
+
+USE_GITLAB=	yes
+GL_ACCOUNT=	amini-allight
+
+.if defined(WITH_DEBUG)
+CMAKE_ARGS+=	-DOPTENCH_DEPLOYMENT:BOOL=OFF
+.endif
+
+pre-configure:
+	${REINPLACE_CMD} -e 's|/usr/include/qt6|${QT_INCDIR}|'	\
+		${WRKSRC}/CMakeLists.txt
+
+.include <bsd.port.mk>
diff --git a/science/optench/distinfo b/science/optench/distinfo
new file mode 100644
index 0000000000000..245ffc441a061
--- /dev/null
+++ b/science/optench/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1708090531
+SHA256 (optench-1.2.5.tar.bz2) = d81467158d54844605d664b8b2094df95aa9741ea5c982fc35cdd1f77d0df3a9
+SIZE (optench-1.2.5.tar.bz2) = 2277089
diff --git a/science/optench/pkg-descr b/science/optench/pkg-descr
new file mode 100644
index 0000000000000..df5639cadbc13
--- /dev/null
+++ b/science/optench/pkg-descr
@@ -0,0 +1,3 @@
+A free virtual optical bench for the design of optical systems, written in C++
+with Qt.
+It simulates interactions between light sources, lenses, mirrors and occluders.
diff --git a/science/optench/pkg-plist b/science/optench/pkg-plist
new file mode 100644
index 0000000000000..0d0bd5604a0df
--- /dev/null
+++ b/science/optench/pkg-plist
@@ -0,0 +1,7 @@
+bin/optench
+share/applications/org.optench.optench.desktop
+share/icons/hicolor/256x256/apps/org.optench.optench.png
+share/icons/hicolor/256x256/mimetypes/org.optench.optench-mimetype.png
+share/man/man1/optench.1.gz
+share/metainfo/org.optench.optench.appdata.xml
+share/mime/packages/org.optench.optench.xml