The Ankerwycke Yew is an ancient yew tree close to the ruins of St Mary's Priory, the site of a Benedictine nunnery built in the 12th century, near Wraysbury in Berkshire, England. It is a male tree with a girth of 8 metres at 0.3 metres. The tree is at least 1,400 years old, and could be as old as 2,500 years.