diff --git a/archivers/lrzip/Makefile b/archivers/lrzip/Makefile
new file mode 100644
index 00000000000..fa10c739ca6
--- /dev/null
+++ b/archivers/lrzip/Makefile
@@ -0,0 +1,36 @@
+COMMENT =	compression utility for large files
+
+GH_ACCOUNT =	ckolivas
+GH_PROJECT =	lrzip
+GH_TAGNAME =	v0.651
+
+CATEGORIES =	archivers
+
+MAINTAINER =	Ruben Llorente <porting@use.startmail.com>
+
+# GPLv2+
+PERMIT_PACKAGE = Yes
+
+WANTLIB += ${COMPILER_LIBCXX} bz2 c lz4 lzo2 m z
+
+COMPILER =	base-clang ports-gcc
+
+LIB_DEPENDS =	archivers/bzip2 \
+		archivers/lz4 \
+		archivers/lzo2
+
+RUN_DEPENDS =	shells/bash
+
+CONFIGURE_STYLE = autoreconf
+CONFIGURE_ARGS = --disable-doc
+CONFIGURE_ENV =	CPPFLAGS="-I${LOCALBASE}/include" \
+		LDFLAGS="-L${LOCALBASE}/lib"
+
+AUTOCONF_VERSION = 2.69
+AUTOMAKE_VERSION = 1.16
+
+post-install:
+	${INSTALL_DATA_DIR} ${PREFIX}/share/examples/lrzip
+	${INSTALL_DATA} ${WRKSRC}/doc/*.example ${PREFIX}/share/examples/lrzip
+
+.include <bsd.port.mk>
diff --git a/archivers/lrzip/distinfo b/archivers/lrzip/distinfo
new file mode 100644
index 00000000000..48130635619
--- /dev/null
+++ b/archivers/lrzip/distinfo
@@ -0,0 +1,2 @@
+SHA256 (lrzip-0.651.tar.gz) = 9MhN53igWRIwQGgf1HwXVl/MT+wMzGj88y2X+tFs2JI=
+SIZE (lrzip-0.651.tar.gz) = 238854
diff --git a/archivers/lrzip/patches/patch-Lrzip_h b/archivers/lrzip/patches/patch-Lrzip_h
new file mode 100644
index 00000000000..e8c811642db
--- /dev/null
+++ b/archivers/lrzip/patches/patch-Lrzip_h
@@ -0,0 +1,14 @@
+Index: Lrzip.h
+--- Lrzip.h.orig
++++ Lrzip.h
+@@ -29,6 +29,10 @@
+ # include <inttypes.h>
+ #endif
+ 
++#if defined (__OpenBSD__) || (__NetBSD__)
++# include <stdarg.h>
++#endif
++
+ #ifdef __cplusplus
+ extern "C" {
+ #endif
diff --git a/archivers/lrzip/patches/patch-lrzip_c b/archivers/lrzip/patches/patch-lrzip_c
new file mode 100644
index 00000000000..e2ae7474681
--- /dev/null
+++ b/archivers/lrzip/patches/patch-lrzip_c
@@ -0,0 +1,50 @@
+- Use datasize-max instead of all available physical memory for
+ determining the decompression window.
+
+- Fix for CVE-2018-5786
+
+Index: lrzip.c
+--- lrzip.c.orig
++++ lrzip.c
+@@ -90,6 +90,32 @@ i64 get_ram(rzip_control *control)
+ 
+ 	return ramsize;
+ }
++#elif defined(__OpenBSD__)
++# include <sys/resource.h>
++i64 get_ram(rzip_control *control)
++{
++	struct rlimit rl;
++	i64 ramsize = (i64)sysconf(_SC_PHYS_PAGES) * PAGE_SIZE;
++
++	/* Raise limits all the way to the max */
++
++	if (getrlimit(RLIMIT_DATA, &rl) == -1)
++		fatal_return(("Failed to get limits in get_ram\n"), -1);
++
++	rl.rlim_cur = rl.rlim_max;
++	if (setrlimit(RLIMIT_DATA, &rl) == -1)
++		fatal_return(("Failed to set limits in get_ram\n"), -1);
++
++	/* Declare detected RAM to be either the max RAM available from
++	physical memory or the max RAM allowed by RLIMIT_DATA, whatever
++	is smaller, to prevent the heuristics from selecting
++	compression windows which cause lrzip to go into deep swap */
++
++	if (rl.rlim_max < ramsize)
++		return rl.rlim_max;
++
++	return ramsize;
++}
+ #else /* __APPLE__ */
+ i64 get_ram(rzip_control *control)
+ {
+@@ -1093,7 +1119,7 @@ next_chunk:
+ 		do {
+ 			i64 head_off;
+ 
+-			if (unlikely(last_head && last_head < second_last))
++			if (unlikely(last_head && last_head <= second_last))
+ 				failure_goto(("Invalid earlier last_head position, corrupt archive.\n"), error);
+ 			second_last = last_head;
+ 			if (unlikely(last_head + ofs > infile_size))
diff --git a/archivers/lrzip/patches/patch-lrzip_private_h b/archivers/lrzip/patches/patch-lrzip_private_h
new file mode 100644
index 00000000000..9fe72e5dfaf
--- /dev/null
+++ b/archivers/lrzip/patches/patch-lrzip_private_h
@@ -0,0 +1,21 @@
+Index: lrzip_private.h
+--- lrzip_private.h.orig
++++ lrzip_private.h
+@@ -46,8 +46,6 @@
+ 
+ #ifdef HAVE_ALLOCA_H
+ # include <alloca.h>
+-#elif defined __GNUC__
+-# define alloca __builtin_alloca
+ #elif defined _AIX
+ # define alloca __alloca
+ #elif defined _MSC_VER
+@@ -144,7 +142,7 @@ extern int errno;
+ #define unlikely(x)	__builtin_expect(!!(x), 0)
+ #define __maybe_unused	__attribute__((unused))
+ 
+-#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__ANDROID__) || defined(__APPLE__)
++#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__ANDROID__) || defined(__APPLE__) || defined(__OpenBSD__)
+ # define ffsll __builtin_ffsll
+ #endif
+ 
diff --git a/archivers/lrzip/pkg/DESCR b/archivers/lrzip/pkg/DESCR
new file mode 100644
index 00000000000..c098528e9f6
--- /dev/null
+++ b/archivers/lrzip/pkg/DESCR
@@ -0,0 +1,5 @@
+LRZIP (Long Range ZIP) is a file compression program designed to
+do particularly well on very large files containing long distance
+redundancy. The larger the file and the more memory you have, the better
+the compression advantage this will provide. A variety of compression
+options allow optimizing for size and speed.
diff --git a/archivers/lrzip/pkg/PLIST b/archivers/lrzip/pkg/PLIST
new file mode 100644
index 00000000000..e87f73c53bc
--- /dev/null
+++ b/archivers/lrzip/pkg/PLIST
@@ -0,0 +1,40 @@
+bin/lrunzip
+bin/lrz
+bin/lrzcat
+@bin bin/lrzip
+bin/lrztar
+bin/lrzuntar
+@man man/man1/lrunzip.1
+@man man/man1/lrz.1
+@man man/man1/lrzcat.1
+@man man/man1/lrzip.1
+@man man/man1/lrztar.1
+@man man/man1/lrzuntar.1
+@man man/man5/lrzip.conf.5
+share/doc/lrzip/
+share/doc/lrzip/AUTHORS
+share/doc/lrzip/BUGS
+share/doc/lrzip/COPYING
+share/doc/lrzip/ChangeLog
+share/doc/lrzip/README-NOT-BACKWARD-COMPATIBLE
+share/doc/lrzip/README.Assembler
+share/doc/lrzip/README.benchmarks
+share/doc/lrzip/README.lzo_compresses.test.txt
+share/doc/lrzip/README.md
+share/doc/lrzip/TODO
+share/doc/lrzip/WHATS-NEW
+share/doc/lrzip/lrzip.conf.example
+share/doc/lrzip/lzma/
+share/doc/lrzip/lzma/7zC.txt
+share/doc/lrzip/lzma/7zFormat.txt
+share/doc/lrzip/lzma/Methods.txt
+share/doc/lrzip/lzma/README
+share/doc/lrzip/lzma/README-Alloc
+share/doc/lrzip/lzma/history.txt
+share/doc/lrzip/lzma/lzma.txt
+share/doc/lrzip/magic.header.txt
+share/doc/pkg-readmes/${PKGSTEM}
+share/examples/lrzip/
+@sample ${SYSCONFDIR}/lrzip/
+share/examples/lrzip/lrzip.conf.example
+@sample ${SYSCONFDIR}/lrzip/lrzip.conf
diff --git a/archivers/lrzip/pkg/README b/archivers/lrzip/pkg/README
new file mode 100644
index 00000000000..4bf87f82365
--- /dev/null
+++ b/archivers/lrzip/pkg/README
@@ -0,0 +1,7 @@
++-----------------------------------------------------------------------
+| Running ${FULLPKGNAME} on OpenBSD
++-----------------------------------------------------------------------
+
+Lrzip might require an abusive amount of memory for compression and
+decompression.  The default limits for datasize may need to be bumped to
+use this software.