John Pollen (c. 1702–1775), of Andover, Hampshire, was a British lawyer and Whig politician who sat in the House of Commons from 1734 to 1754.
He was admitted at Lincoln's Inn on 28 November 1718[1] and matriculated at Corpus Christi College, Oxford on 17 October 1719, aged 17.
At the 1734 British general election, he was returned as a Whig Member of Parliament for Andover on his own interest.
He voted with the Administration in all recorded divisions, except on the place bill of 1740, when he was absent.
In 1749 he applied to Hardwicke to become chief justice of his circuit, and was awarded the post in 1753.