William Whitaker (c. 1580 – 1646) was an English lawyer and politician who sat in the House of Commons from 1640 to 1646.
He was the son of Henry Whitaker, the MP for Westbury in 1586.
Whitaker attended Middle Temple and was appointed recorder of Shaftesbury in 1627.
[1] In 1646 Whitaker helped establish Shaftesbury Grammar School.
His son Henry Whitaker was later MP for Shaftesbury.