John Kean (December 4, 1852 – November 4, 1914) was an American attorney, banker and Republican Party politician from Elizabeth, New Jersey. He represented New Jersey in the U.S. Senate from 1899 to 1911 and served two separate terms in the United States House of Representatives, from 1883 to 1885, and from 1887 to 1889. A member of the Kean family of politicians, his great-grandfather, John Kean, had been a delegate to the Continental Congress for South Carolina, his brother was U.S. Senator Hamilton Fish Kean, his nephew was U.S. Representative Robert Kean and his great-nephew was Governor Thomas Kean.