John Alsop King (1788–1867) was a former governor (1857–1859) of New York in the USA. He was born in the area now incompassed by New York City on 3 January 1788. He was the son of Rufus King and the brother of James Gore King, who briefly represented the state of New Jersey. John King served in the state assembly (at times from 1819 through 1840) and senate (1823), and was also the New York representative (1849–1851) to Congress.

King died on 7 July 1867 in Queens County, New York.