The below OREO varieties are vegetarian friendly:
Suitable for Lacto-Vegetarians (may contain milk)
OREO Cookies Original
OREO Cookies Chocolate
OREO Cookies Double Stuff Vanilla Creme
OREO Cookies Double Stuff Choc Hazelnut
OREO Cookies Double Stuff Choc Mudcake
OREO Cookies Double Stuff Cinnamon Bun
OREO Cookies Double Stuff Mint
Suitable for Lacto-Vegetarians (contains milk)
OREO Dunked in Cadbury Chocolate Original
OREO Wafer Sticks Milk Chocolate