MLB lockout may refer to one of the following lockouts or strike actions in Major League Baseball:

• The 1972 Major League Baseball strike, which canceled 86 games^[1][2][3]
• The 1973 Major League Baseball lockout, which cancelled no games^[2][3]
• The 1976 Major League Baseball lockout, which cancelled no games^[2][3][4]
• The 1980 Major League Baseball strike, which cancelled no games^[1][2][3]
• The 1981 Major League Baseball strike, which cancelled 713 games^[2][3]
• The 1985 Major League Baseball strike, which cancelled no games^[2][3]
• The 1990 Major League Baseball lockout, which cancelled no games but postponed 1990's opening day to April 9^[2][3]
• The 1994–95 Major League Baseball strike, which cancelled 938 games and the entire 1994 postseason, including the 1994 World Series^[2][3][5]
• The 2021–22 Major League Baseball lockout, which cancelled no games but postponed 2022's opening day to April 7^[6]

• MLS lockout
• NBA lockout
• NFL lockout
• NHL lockout