Everett John "Sonny" Grandelius (April 16, 1929 – April 25, 2008) was an American football player, coach, announcer, and executive. He served as the head coach at the University of Colorado at Boulder from 1959 to 1961, compiling a record of 20–11. Grandelius played football at Michigan State University from 1948 to 1950 and with the National Football League's New York Giants in 1953.