Oliver Monroe Cline (December 31, 1925 – May 12, 2001) was an American professional football player who was a fullback for the Cleveland Browns and Detroit Lions in the 1940s and 1950s.

The following year, Cline was named the most valuable player in the Big Ten Conference, rushing for 936 yards as Ohio State built up a 7–2 record and was ranked 12th in the AP Poll.

Following a brief stint in the U.S. Army at the end of World War II, Cline returned to Ohio State for a final season in 1947.

[2] Although he was overshadowed by teammate Les Horvath, who won the Heisman Trophy that year, Cline was the team's starting fullback and ran for 221 yards on 65 carries, scoring 39 points.

[3] The Buckeyes won the Big Ten Conference championship with an undefeated 9-0 record and were ranked second in the country in the AP Poll.

[3] Cline rushed for 229 yards in a November game against the University of Pittsburgh, setting an Ohio State single-game record that stood for 27 years until Archie Griffin broke it in 1972.

[7] The move upset some Ohio State supporters worried about the team's loss of talent, but Cline said he wanted to go pro because he was getting married and needed to start making money.

[7] In the Browns, Cline joined a team that had won the AAFC championships 1946 and 1947 behind an offensive attack that featured quarterback Otto Graham, fullback Marion Motley and ends Dante Lavelli and Mac Speedie.

[8] Serving as a backup to Motley, Cline ran for 129 yards in 1948, when Cleveland went undefeated and won the AAFC championship for the third time in a row.

[12] The AAFC folded after the 1949 season, but three teams were merged into the NFL: the Browns, Baltimore Colts and San Francisco 49ers.

[10] Led by quarterback Bobby Layne and halfback Doak Walker, the Lions won the NFL championship in 1952 and 1953, beating the Browns both times.