diff --git a/lang/Makefile b/lang/Makefile
index b7e2db63ddfb..226a865ce71a 100644
--- a/lang/Makefile
+++ b/lang/Makefile
@@ -130,6 +130,7 @@
     SUBDIR += jakarta-commons-jelly
     SUBDIR += jimtcl
     SUBDIR += jruby
+    SUBDIR += js_of_ocaml
     SUBDIR += jython
     SUBDIR += kawa
     SUBDIR += klone
diff --git a/lang/js_of_ocaml/Makefile b/lang/js_of_ocaml/Makefile
new file mode 100644
index 000000000000..e87c3030a7fb
--- /dev/null
+++ b/lang/js_of_ocaml/Makefile
@@ -0,0 +1,31 @@
+# Created by: Jaap Boender <jaapb@kerguelen.org>
+# $FreeBSD$
+
+PORTNAME=	js_of_ocaml
+PORTVERSION=	1.3.2
+CATEGORIES=	lang
+MASTER_SITES=	http://ocsigen.org/download/
+
+MAINTAINER=	jaapb@kerguelen.org
+COMMENT=	OCaml to JavaScript compiler
+
+BUILD_DEPENDS=	ocaml-lwt>=2.3.0:${PORTSDIR}/devel/ocaml-lwt \
+		${SA_DIR}/deriving-ocsigen/deriving.a:${PORTSDIR}/devel/ocaml-deriving-ocsigen
+RUN_DEPENDS=	ocaml-lwt>=2.3.0:${PORTSDIR}/devel/ocaml-lwt \
+		${SA_DIR}/deriving-ocsigen/deriving.a:${PORTSDIR}/devel/ocaml-deriving-ocsigen
+
+SA_DIR=		${PREFIX}/${OCAML_SITELIBDIR}
+
+USES=			gmake
+USE_OCAML=		yes
+USE_OCAML_FINDLIB=	yes
+USE_OCAML_LDCONFIG=	yes
+USE_OCAMLFIND_PLIST=	yes
+
+PLIST_FILES+=		bin/js_of_ocaml
+
+MAKE_ENV+=		BINDIR=${STAGEDIR}${PREFIX}/bin \
+			DESTDIR=${STAGEDIR} \
+			OCAML_SITELIBDIR=${PREFIX}/lib/ocaml/site-lib
+
+.include <bsd.port.mk>
diff --git a/lang/js_of_ocaml/distinfo b/lang/js_of_ocaml/distinfo
new file mode 100644
index 000000000000..56c1bf19e1d9
--- /dev/null
+++ b/lang/js_of_ocaml/distinfo
@@ -0,0 +1,2 @@
+SHA256 (js_of_ocaml-1.3.2.tar.gz) = 5996d2a9bc32121186e1964af557bb411eb5a27aa155d2c6a8a144ee5f3d0c36
+SIZE (js_of_ocaml-1.3.2.tar.gz) = 1901593
diff --git a/lang/js_of_ocaml/files/patch-Makefile b/lang/js_of_ocaml/files/patch-Makefile
new file mode 100644
index 000000000000..8b7fec7186e1
--- /dev/null
+++ b/lang/js_of_ocaml/files/patch-Makefile
@@ -0,0 +1,14 @@
+$NetBSD: patch-Makefile,v 1.2 2012/12/14 14:40:24 jaapb Exp $
+
+Install to DESTDIR
+--- Makefile.orig	2012-12-07 19:39:02.000000000 +0000
++++ Makefile
+@@ -31,7 +31,7 @@ include Makefile.filelist
+ 
+ VERSION := $(shell head -n 1 VERSION)
+ install:
+-	ocamlfind install -patch-version ${VERSION} $(LIBRARY) lib/META $(INTF) $(IMPL) $(OTHERS) $(DOC)
++	ocamlfind install -ldconf ignore -destdir ${DESTDIR}${OCAML_SITELIBDIR} -patch-version ${VERSION} $(LIBRARY) lib/META $(INTF) $(IMPL) $(OTHERS) $(DOC)
+ 	install -d -m 755 $(BINDIR)
+ 	install $(BIN) $(BINDIR)
+ 
diff --git a/lang/js_of_ocaml/files/patch-Makefile.conf b/lang/js_of_ocaml/files/patch-Makefile.conf
new file mode 100644
index 000000000000..d2bddd6f2273
--- /dev/null
+++ b/lang/js_of_ocaml/files/patch-Makefile.conf
@@ -0,0 +1,13 @@
+$NetBSD: patch-Makefile.conf,v 1.1 2012/07/11 15:35:06 wiz Exp $
+
+Have BINDIR be determined from package Makefile
+--- Makefile.conf.orig	2011-11-30 14:25:06.000000000 +0000
++++ Makefile.conf
+@@ -1,6 +1,6 @@
+ 
+ # Where binaries are installed:
+-BINDIR := /usr/local/bin
++# BINDIR := /usr/local/bin
+ 
+ ####
+ 
diff --git a/lang/js_of_ocaml/pkg-descr b/lang/js_of_ocaml/pkg-descr
new file mode 100644
index 000000000000..fa7201fefe3f
--- /dev/null
+++ b/lang/js_of_ocaml/pkg-descr
@@ -0,0 +1,4 @@
+Js_of_ocaml is a compiler of OCaml bytecode to Javascript. It makes it
+possible to run Ocaml programs in a Web browser.
+
+WWW: http://ocsigen.org/js_of_ocaml/