William Bill (c. 1505 – 15 July 1561) was an English priest and academic who was Master of St John's College, Cambridge (1547–1551?

William was educated at St John's College, Cambridge, gaining his BA in 1532.

In 1547, he was elected Master of St John's College, and also became a Doctor of Divinity.

He was Lord High Almoner from 1558 to 1561 and helped revise the liturgy of Edward VI.

He was buried in St Benedict's Chapel, Westminster Abbey, where his tomb and small brass figure can still be seen.