Sir Henry Caesar (2 October 1630 – 6 January 1668 ) was an English politician who sat in the House of Commons in 1660 and 1666 through 1668. Caesar was the son of Sir Charles Caesar, by his wife Jane Barkham, and succeeded to the estate of Bennington, Hertfordshire, in 1642. He was admitted at Jesus College, Cambridge, on 10 June 1646 and admitted at Inner Temple in 1647. In 1660, Caesar was elected Member of Parliament for Hertfordshire in the Convention Parliament. He regained his seat in Cavalier Parliament in a by-election in April 1666. He was knighted on 7 July 1660.