Sir John Hobart, 3rd Baronet (20 March 1628 – 22 August 1683) was an English landowner and politician who sat in the House of Commons at various times between 1654 and 1683. Hobart was the son of Sir Miles Hobart (son of Sir Henry Hobart, 1st Baronet), and his wife Frances Peyton, daughter of Sir John Peyton, 1st Baronet, and was born in Ditchingham, Norfolk. He succeeded his uncle John as baronet in 1647. In 1654, Hobart was elected member of parliament for Norfolk in the First Protectorate Parliament. He was re-elected MP for Norfolk in 1656 for the Second Protectorate Parliament.