diff --git a/compiler/prefixGDS.py b/compiler/prefixGDS.py
new file mode 100644
index 00000000..942bb7a0
--- /dev/null
+++ b/compiler/prefixGDS.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+import sys
+from gdsMill import gdsMill
+
+if len(sys.argv) < 3:
+    print("Script to prefix every instance and structure with the root cell name to provide unique namespace.")
+    print("Usage: {0} in.gds out.gds".format(sys.argv[0]))
+    sys.exit(1)
+
+gds_file = sys.argv[1]
+gds = gdsMill.VlsiLayout()
+reader = gdsMill.Gds2reader(gds)
+reader.loadFromFile(gds_file)
+
+gds.uniquify()
+
+writer = gdsMill.Gds2writer(gds)
+writer.writeToFile(sys.argv[2])