The 1951 Cleveland Browns season was the team's second season with the National Football League. Dub Jones set an NFL record with six touchdowns in one game versus the Chicago Bears.
Cleveland won the NFL championship in 1950, its first year in the league after four seasons in the defunct All-America Football Conference. Head coach Paul Brown made a number of roster moves in the offseason, including bringing in fullback Chick Jagade, end Bob Oristaglio and defensive backs Don Shula and Carl Taseff.
Note: Intra-conference opponents are in bold text.