diff --git a/scripts/list-all-patterns.sh b/scripts/list-all-patterns.sh
new file mode 100755
index 0000000..4ab39fe
--- /dev/null
+++ b/scripts/list-all-patterns.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+set -o pipefail
+
+# Lists all repos tagged with "pattern" in the two organizations:
+# - validatedpatterns
+# - validatedpatterns-sandbox
+
+ORGS=("validatedpatterns" "validatedpatterns-sandbox")
+TOPIC=${TOPIC:-pattern}
+
+for org in ${ORGS[@]}; do
+    REPOS=$(gh repo list "${org}" --no-archived --topic "${TOPIC}" --visibility public --limit 100 |awk '{ print $1 }' | sort)
+    ret=$?
+    if [ ${ret} -ne 0 ]; then
+        echo "Error retrieving pattern list for ${org}"
+        exit ${ret}
+    fi
+    echo "${REPOS}"
+done