Oriel Ynys Môn is a museum and arts centre located in Llangefni, Ynys Môn, Wales.

A two-part centre, the History Gallery provides an insight into the island’s culture, history and environment. The Art Gallery has a changing programme of exhibitions, encompassing art, craft, drama, sculpture and social history.

It also houses a series of permanent displays, including:

• the world’s largest collection of the works of local artist Sir Kyffin Williams. This is housed in a specialist collection named Oriel Kyffin Williams opened by Shirley Paget, Marchioness of Anglesey on 18 July 2008.