Richard Charles Blum (born July 31, 1935) is an American investment banker and husband of United States Senator Dianne Feinstein.
He is the chairman and president of Blum Capital, an equity investment management firm that acts as general partner for various investment partnerships and provides investment advisory services.
Blum also serves in various boards of directors of several companies, including CB Richard Ellis, where until May 2009 he served as the chairman of that board.
He has been a regent of the University of California since 2002.