diff --git a/ports/libunistring/copyright b/ports/libunistring/copyright
new file mode 100644
index 0000000000..6bab2feda5
--- /dev/null
+++ b/ports/libunistring/copyright
@@ -0,0 +1,18 @@
+The libunistring library and its header files are dual-licensed under
+"the GNU LGPLv3+ or the GNU GPLv2". This means, you can use it under either
+  - the terms of the GNU Lesser General Public License (LGPL) version 3 or
+    (at your option) any later version, or
+  - the terms of the GNU General Public License (GPL) version 2, or
+  - the same dual license "the GNU LGPLv3+ or the GNU GPLv2".
+
+You find the GNU LGPL version 3 in the file COPYING.LIB.  This license is
+based on the GNU GPL version 3, see file COPYING.
+
+You can find the GNU GPL version 2 at
+<https://www.gnu.org/licenses/old-licenses/gpl-2.0.html>.
+
+Note: This dual license makes it possible for the libunistring library
+to be used by packages under GPLv2 or GPLv2+ licenses, in particular. See
+the table in <https://www.gnu.org/licenses/gpl-faq.html#AllCompatibility>.
+
+The documentation is under another license; see in the documentation.
diff --git a/ports/libunistring/portfile.cmake b/ports/libunistring/portfile.cmake
new file mode 100644
index 0000000000..a443ec9ccc
--- /dev/null
+++ b/ports/libunistring/portfile.cmake
@@ -0,0 +1,36 @@
+set(LIBUNISTRING_VERSION 0.9.10)
+set(LIBUNISTRING_FILENAME libunistring-${LIBUNISTRING_VERSION}.tar.gz)
+
+if(NOT VCPKG_TARGET_IS_MINGW)
+    vcpkg_fail_port_install(ON_TARGET "Windows" "UWP")
+endif()
+
+vcpkg_download_distfile(ARCHIVE
+    URLS
+        "https://ftp.gnu.org/gnu/libunistring/${LIBUNISTRING_FILENAME}"
+        "https://www.mirrorservice.org/sites/ftp.gnu.org/gnu/libunistring/${LIBUNISTRING_FILENAME}"
+    FILENAME "${LIBUNISTRING_FILENAME}"
+    SHA512 690082732fbbd47ab4ffbd6f21d85afece0f8e2ded24982f949f4ae52bf0a981b75ea9bc14ab289e0954cde07f31a7a4c2bb65615a8eb5b2bfa65720310b6fc9
+)
+
+vcpkg_extract_source_archive_ex(
+    OUT_SOURCE_PATH SOURCE_PATH
+    ARCHIVE "${ARCHIVE}"
+    REF ${LIBUNISTRING_VERSION}
+)
+
+vcpkg_configure_make(
+    SOURCE_PATH "${SOURCE_PATH}"
+    AUTOCONFIG
+    COPY_SOURCE
+    OPTIONS
+        "--with-libiconv-prefix=${CURRENT_INSTALLED_DIR}"
+)
+vcpkg_install_make()
+vcpkg_fixup_pkgconfig()
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/share")
+
+# copyright excerpt from README, to cover dual license under "LGPLv3+ or GPLv2".
+file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/copyright" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+file(INSTALL "${SOURCE_PATH}/COPYING.LIB" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
+file(INSTALL "${SOURCE_PATH}/COPYING" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
diff --git a/ports/libunistring/vcpkg.json b/ports/libunistring/vcpkg.json
new file mode 100644
index 0000000000..b11bbb6fa9
--- /dev/null
+++ b/ports/libunistring/vcpkg.json
@@ -0,0 +1,10 @@
+{
+  "name": "libunistring",
+  "version": "0.9.10",
+  "description": "GNU libunistring provides functions for manipulating Unicode strings and for manipulating C strings according to the Unicode standard.",
+  "homepage": "https://www.gnu.org/software/libunistring/",
+  "supports": "!windows",
+  "dependencies": [
+    "libiconv"
+  ]
+}
diff --git a/versions/baseline.json b/versions/baseline.json
index d71a64cb20..f628494062 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -3668,6 +3668,10 @@
       "baseline": "4.3-0",
       "port-version": 0
     },
+    "libunistring": {
+      "baseline": "0.9.10",
+      "port-version": 0
+    },
     "liburing": {
       "baseline": "2.0",
       "port-version": 0
diff --git a/versions/l-/libunistring.json b/versions/l-/libunistring.json
new file mode 100644
index 0000000000..800afe50cc
--- /dev/null
+++ b/versions/l-/libunistring.json
@@ -0,0 +1,9 @@
+{
+  "versions": [
+    {
+      "git-tree": "586bf47f6b9ee55aa3eb9ec7c7ff36363e39980b",
+      "version": "0.9.10",
+      "port-version": 0
+    }
+  ]
+}