Calvin O'Neal (born October 6, 1954) is a former professional American football linebacker who played for the Baltimore Colts in 1978 and was an All-American and team co-captain for the University of Michigan Wolverines in 1976.

O'Neal is a 1972 graduate of Saginaw High School,^[1] where he won All-State and All-Saginaw Valley honors in football and was named Most Valuable Player of the Saginaw Valley Conference, after averaging 14 tackles per game.^[2] He was also a standout in basketball and track and field at Saginaw High from 1969-71.^[2] O'Neal was teammates with quarterback Tom Slade both at Saginaw High School and at the University of Michigan.^[3]

He attended the University of Michigan on a football scholarship. He served as co-captain along with Rob Lytle and Kirk Lewis.^[4] The 1976 team was ranked #1 for eight weeks, but lost two of its last four games including a Rose Bowl loss to the USC Trojans. However, the team had four All-Americans (O'Neal, Lytle, Jim Smith, and Mark Donahue) as well as nine All Big Ten Conference players.^[4] O'Neal made ten tackles in his first game for the Wolverines,^[2] was twice named an All-Big Ten linebacker and was a Consensus All-American and team co-captain in 1976.^[5] He was a team leader on defense, setting a season record with 151 tackles in 1975, and had a record 378 tackles for his career.^[5] O'Neal combined strength and speed from his inside linebacking spot, and had three interceptions in 1976 for 60 return yards and a touchdown.^[5]

O'Neal was selected by the Baltimore Colts in the sixth round (163rd pick) of the 1977 NFL Draft.^[6] He played in 15 games for the Colts in 1978.^[1]

O'Neal lives in Shreveport, Louisiana.^[7] He is the founder of Lifestyle Business Affairs, an enrichment program for high school and collegiate student-athletes.^[8] O'Neal was inducted into the Saginaw County Sports Hall of Fame in 2003.^[2]