Harold Tanner (born 1932) is an investment banker and philanthropist.
Tanner graduated from the Cornell University School of Industrial and Labor Relations in 1952 and earned an MBA from Harvard University in 1956.
Tanner is a longtime member of the American Jewish Committee's board of governors, and served the human relations organization as chair of its board of trustees, member of its executive committee, and from 2001 to 2004 as its president.
He serves as chairman of the AJC Transatlantic Institute.
From 2005[1]-7 he served as chairman of the Conference of Presidents of Major Jewish Organizations.