Charles John Diamond (born July 19, 1936) is a former American football tackle who played four seasons in the American Football League (AFL) with the Dallas Texans/Kansas City Chiefs.
He played college football at the University of Miami and attended Archbishop Curley-Notre Dame High School in Buena Vista, Miami, Florida.
Diamond was also a member of the BC Lions of the Canadian Football League.
He was a member of the Dallas Texans team that won the 1962 AFL championship.