Robert James Hamilton Lambert (18 July 1874 – 24 March 1956) was an Irish cricketer. A right-handed batsman and a right-arm off spin bowler, including 23 first-class matches, captaining them on 13 occasions. He also played first-class cricket for London County and Woodbrook Club and Ground. On his death, the Wisden Cricketer's Almanack described him as the best all-rounder produced by Ireland.