diff --git a/math/matio/Makefile b/math/matio/Makefile
new file mode 100644
index 00000000000..66d8985a08f
--- /dev/null
+++ b/math/matio/Makefile
@@ -0,0 +1,40 @@
+# $OpenBSD: Makefile,v 1.1.1.1 2006/10/19 10:51:01 steven Exp $
+
+COMMENT=	"library for reading and writing Matlab MAT files"
+
+DISTNAME=	matio-1.3.1
+SHARED_LIBS=	matio	0.0
+CATEGORIES=	math
+
+HOMEPAGE=	http://sourceforge.net/projects/matio/
+
+# LGPL
+PERMIT_PACKAGE_CDROM=	Yes
+PERMIT_PACKAGE_FTP=	Yes
+PERMIT_DISTFILES_CDROM=	Yes
+PERMIT_DISTFILES_FTP=	Yes
+
+MASTER_SITES=	${MASTER_SITE_SOURCEFORGE:=matio/}
+
+USE_LIBTOOL=	Yes
+CONFIGURE_STYLE=gnu
+CONFIGURE_ARGS=	${CONFIGURE_SHARED} \
+		--enable-fortran=no \
+		--enable-test=yes
+
+TESTS=	copy write writecompressed writestruct writecell readslab \
+	writeslab writesparse writenan writeinf readslab4 ind2sub sub2ind
+
+do-regress:
+.for t in ${TESTS}
+	@echo "Testing ${t}"
+	@cd ${WRKBUILD}/test && ./test_mat ${t}
+.endfor
+
+post-install:
+	${INSTALL_DATA_DIR} ${PREFIX}/share/doc/matio
+	${INSTALL_DATA} ${WRKSRC}/libmatio.pdf ${PREFIX}/share/doc/matio
+	@rm -rf ${PREFIX}/share/matio
+	@rm -rf ${PREFIX}/bin/test_*
+
+.include <bsd.port.mk>
diff --git a/math/matio/distinfo b/math/matio/distinfo
new file mode 100644
index 00000000000..56853869ac3
--- /dev/null
+++ b/math/matio/distinfo
@@ -0,0 +1,4 @@
+MD5 (matio-1.3.1.tar.gz) = 8fd9a3a6c2587deade56b0846642ebd3
+RMD160 (matio-1.3.1.tar.gz) = 64e12e1774db3054ce11f6efd15686c8432a3197
+SHA1 (matio-1.3.1.tar.gz) = 70af161a788f7f5e171f27e2655763454ec33839
+SIZE (matio-1.3.1.tar.gz) = 938713
diff --git a/math/matio/patches/patch-test_test_mat_c b/math/matio/patches/patch-test_test_mat_c
new file mode 100644
index 00000000000..eebe2f35bd5
--- /dev/null
+++ b/math/matio/patches/patch-test_test_mat_c
@@ -0,0 +1,13 @@
+$OpenBSD: patch-test_test_mat_c,v 1.1.1.1 2006/10/19 10:51:01 steven Exp $
+--- test/test_mat.c.orig	Wed Oct 18 17:21:19 2006
++++ test/test_mat.c	Wed Oct 18 17:22:32 2006
+@@ -1197,6 +1197,9 @@ int main (int argc, char *argv[])
+     }
+ 
+     printf("%d of %d tests completed successfully\n",ntests-err,ntests);
++
++    if (err > 0)
++      return 1;
+     
+     return 0;
+ }
diff --git a/math/matio/pkg/DESCR b/math/matio/pkg/DESCR
new file mode 100644
index 00000000000..ace574056f0
--- /dev/null
+++ b/math/matio/pkg/DESCR
@@ -0,0 +1,3 @@
+matio is an ISO C library for reading and writing Matlab MAT files.
+The library is intended for programs/libraries that do not have access
+or want to rely on Matlab's shared libraries.
diff --git a/math/matio/pkg/PFRAG.shared b/math/matio/pkg/PFRAG.shared
new file mode 100644
index 00000000000..3c7d3d375c7
--- /dev/null
+++ b/math/matio/pkg/PFRAG.shared
@@ -0,0 +1,2 @@
+@comment $OpenBSD: PFRAG.shared,v 1.1.1.1 2006/10/19 10:51:01 steven Exp $
+@lib lib/libmatio.so.${LIBmatio_VERSION}
diff --git a/math/matio/pkg/PLIST b/math/matio/pkg/PLIST
new file mode 100644
index 00000000000..3089b29eb8f
--- /dev/null
+++ b/math/matio/pkg/PLIST
@@ -0,0 +1,10 @@
+@comment $OpenBSD: PLIST,v 1.1.1.1 2006/10/19 10:51:01 steven Exp $
+%%SHARED%%
+include/matio.h
+include/matioConfig.h
+lib/libmatio.a
+lib/libmatio.la
+lib/pkgconfig/
+lib/pkgconfig/matio.pc
+share/doc/matio/
+share/doc/matio/libmatio.pdf