diff --git a/ports/llnl-units/portfile.cmake b/ports/llnl-units/portfile.cmake
new file mode 100644
index 00000000000000..906ddd608f79b7
--- /dev/null
+++ b/ports/llnl-units/portfile.cmake
@@ -0,0 +1,23 @@
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO LLNL/units
+    REF "v${VERSION}"
+    SHA512 b0c40248a25adff97d3bd6eb6899bf7ed9a4622857a6eb0d62d040db6e60141fac201362710bbe417d8c284adcec89f8742815fcf17f30557e822d8f4e08fc4e
+    HEAD_REF main
+)
+
+vcpkg_cmake_configure(
+    SOURCE_PATH "${SOURCE_PATH}"
+    OPTIONS
+        -DUNITS_CMAKE_PROJECT_NAME=LLNL-UNITS
+        -DUNITS_ENABLE_TESTS=OFF
+        -DUNITS_BUILD_FUZZ_TARGETS=OFF
+        -DLLNL-UNITS_ENABLE_ERROR_ON_WARNINGS=OFF
+        -DLLNL-UNITS_ENABLE_EXTRA_COMPILER_WARNINGS=OFF
+)
+
+vcpkg_cmake_install()
+vcpkg_cmake_config_fixup(PACKAGE_NAME llnl-units CONFIG_PATH lib/cmake/llnl-units)
+file(REMOVE_RECURSE "${CURRENT_PACKAGES_DIR}/debug/include")
+vcpkg_install_copyright(FILE_LIST "${SOURCE_PATH}/LICENSE")
+file(INSTALL "${CMAKE_CURRENT_LIST_DIR}/usage" DESTINATION "${CURRENT_PACKAGES_DIR}/share/${PORT}")
diff --git a/ports/llnl-units/usage b/ports/llnl-units/usage
new file mode 100644
index 00000000000000..47da448bdd007e
--- /dev/null
+++ b/ports/llnl-units/usage
@@ -0,0 +1,4 @@
+llnl-units provides CMake targets:
+
+    find_package(llnl-units CONFIG REQUIRED)
+    target_link_libraries(main PRIVATE llnl-units::units)
diff --git a/ports/llnl-units/vcpkg.json b/ports/llnl-units/vcpkg.json
new file mode 100644
index 00000000000000..cdbfd29fd891f8
--- /dev/null
+++ b/ports/llnl-units/vcpkg.json
@@ -0,0 +1,16 @@
+{
+  "name": "llnl-units",
+  "version": "0.9.1",
+  "description": "A run-time C++ library for working with units of measurement and conversions between them and with string representations of units and measurements",
+  "homepage": "https://github.com/LLNL/units",
+  "dependencies": [
+    {
+      "name": "vcpkg-cmake",
+      "host": true
+    },
+    {
+      "name": "vcpkg-cmake-config",
+      "host": true
+    }
+  ]
+}
diff --git a/versions/baseline.json b/versions/baseline.json
index a319aa059c0259..bea56b8d698e03 100644
--- a/versions/baseline.json
+++ b/versions/baseline.json
@@ -5344,6 +5344,10 @@
       "baseline": "9.2.0",
       "port-version": 0
     },
+    "llnl-units": {
+      "baseline": "0.9.1",
+      "port-version": 0
+    },
     "llvm": {
       "baseline": "17.0.2",
       "port-version": 3
diff --git a/versions/l-/llnl-units.json b/versions/l-/llnl-units.json
new file mode 100644
index 00000000000000..12d2b1bad978d8
--- /dev/null
+++ b/versions/l-/llnl-units.json
@@ -0,0 +1,9 @@
+{
+  "versions": [
+    {
+      "git-tree": "b74d9e624d6529738d4d2bb97541dfb2b4097033",
+      "version": "0.9.1",
+      "port-version": 0
+    }
+  ]
+}