Ynys Bery is a small island south of Ramsey Island, Pembrokeshire, Wales.
It is the site of a shipwreck: the S.S. Graffoe (a 2,996-ton steamship bound from Glasgow to Buenos Aires with coal) struck Ramsey Island and sank at the northern end of Ynys Bery in 1903. It lies at a depth of 15 metres, and is one of many Pembrokeshire wrecks popular with divers. Ynys Bery's highest point is 72 metres.