Ao Vong Duen is a large, horseshoe-shaped bay on the east coast of Koh Samet in Rayong Province. The bay faces east-southeast and receives wind from the northeast monsoon (November to March), with good exposure from E to SSE directions.

One of the better riding bays on the island, suited for intermediate riders. The large bay provides more riding space than most Samet beaches. Sandy bottom with clear water. Some boat traffic from ferries serving the bay. The curved shape of the bay offers some shelter from the strongest swells.