diff --git a/cpp/scripts/run_tests.sh b/cpp/scripts/run_tests.sh
new file mode 100755
index 00000000..b2f269d4
--- /dev/null
+++ b/cpp/scripts/run_tests.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+# Build and run all C++ unit tests via Catch2 + ctest.
+set -euo pipefail
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cmake -S "$ROOT" -B "$ROOT/build" -DCMAKE_BUILD_TYPE=Release -DBUILD_TESTING=ON
+cmake --build "$ROOT/build" -j"$(nproc)"
+ctest --test-dir "$ROOT/build" --output-on-failure