John Angerstein (c. 1774 – 8 April 1858) was an English Whig politician from Blackheath, London. He was the only son of John Julius Angerstein, who had moved to London from Russia and made his fortune as a Lloyds underwriter. He was elected at the 1796 general election as a Member of Parliament (MP) for borough of Camelford in Cornwall, holding the seat until the 1802 general election, when he left Parliament. He died in 1858. He had married Amelia, the daughter of William Lock of Norbury Park, Surrey, with whom he had 3 sons and 2 daughters.