John Tufton, 2nd Earl of Thanet (15 December 1608 – 7 May 1664) was an English nobleman and supporter of Charles I of England.

Thanet was a staunch Cavalier, taking part in the Battle of Edge Hill and in 1642 he led a regiment of 100 horse to try to raise a rebellion in Sussex, taking part in the Capture of Chichester, the Battle of Muster Green, and the Siege of Chichester in support of Sir William Brockman in Kent.

He suffered considerably from confiscations and sequestrations of his large estates during the English Civil War.

Among his properties was Bodiam Castle, purchased from the Levett family in 1639, which Thanet sold for £6,000 in 1644.

They had eleven children: Curiously, he was succeeded as Earl of Thanet by four of his sons in succession, the first three having no issue.