圣托马斯·贝克特（英语：Saint Thomas à Becket，1118年－1170年12月29日）是英格兰国王亨利二世的**（Lord Chancellor），他是一个诺曼人且原本跟亨利二世有密切的关系，1162年亨利二世为了能在教会里头有盟友而举荐他担任坎特伯里大主教，但他却与亨利二世反目。因为反对亨利二世对教会的干涉，试图把教会的司法权收回时，请求教宗的干预，触怒了亨利二世。1170年12月29日，在坎特伯雷大教堂被亨利二世支持的四位男爵骑士刺杀而殉道。教宗历山三世于1173年封他为圣人。

Thomas Becket (/ˈbɛkɪt/; also known as Saint Thomas of Canterbury, Thomas of London, and later Thomas à Becket; 21 December c. 1119 (or 1120) – 29 December 1170) was Archbishop of Canterbury from 1162 until his murder in 1170. He is venerated as a saint and martyr by both the Catholic Church and the Anglican Communion. He engaged in conflict with Henry II, King of England over the rights and privileges of the Church and was murdered by followers of the king in Canterbury Cathedral. Soon after his death, he was canonised by Pope Alexander III.