John Wentworth (January 16, 1671 – December 12, 1730) was an American politician, judge and colonial administrator who served as the lieutenant governor of New Hampshire from 1717 to 1730.

In 1712 he was appointed by Queen Anne a councillor for New Hampshire; in 1713 he became a justice of the common pleas, and late in 1717 lieutenant governor.

During his administration he brought focus on the border dispute between New Hampshire and Massachusetts, cultivating power centers in London that eventually led to resolution of that dispute (albeit in 1740, long after his death), and establishing the dynasty that would dominate New Hampshire until independence.

The couple had thirteen children, three of whom (Samuel, Benning, and Mark Hunking Wentworth) would become prominent themselves.

Mark's son in his turn would also become the last royal governor, Sir John Wentworth, 1st Baronet.