Sports labor disputes in the United States

The 1998–99 NBA lockout was the third lockout of four in the history of the National Basketball Association (NBA). It lasted from July 1, 1998, to January 20, 1999, and forced the 1998–99 regular season to be shortened to 50 games per team and that season's All-Star Game to be canceled. NBA owners reopened the league's collective bargaining agreement (CBA) in March 1998, seeking changes to the league's salary cap system and a ceiling on individual player salaries. The National Basketball Players Association (NBPA) opposed the owners' plans and wanted raises for players who earned the league's minimum salary. After the two sides failed to reach an agreement, the owners began the lockout.

The 1999 NBA season was the 53rd season of the National Basketball Association (NBA). Due to a lockout, the season did not start until February 5, 1999 after a new six-year Collective Bargaining Agreement was reached between the NBA and the National Basketball Players Association. All 29 teams played a shortened 50-game regular season schedule- 61% of the regular 82 games- and the 16 teams who qualified for the playoffs played a full post-season schedule. That season's All-Star Game was also canceled. The season ended with the San Antonio Spurs winning the franchise's first NBA championship, beating the New York Knicks 4 games to 1 in the 1999 NBA Finals.

On August 26, 2020, some professional athletes in the United States began to go on strike for their respective sports contests in response to the police shooting of Jacob Blake in Kenosha, Wisconsin. After the video of Blake's shooting in which he was seriously injured went viral, protests and riots broke out in the city of Kenosha and elsewhere. As a result of the shooting of Blake and the protests which followed, on August 26, professional athletes refused to play in their scheduled sports events, beginning with the Milwaukee Bucks of the National Basketball Association (NBA).

The 2012 NFL referee lockout was a labor dispute between the National Football League (NFL) and the NFL Referees Association that resulted in the use of replacement officials through Week 3 of the 2012 NFL season. The lockout began in June 2012 after both sides failed to reach consensus on a collective bargaining agreement. On September 26, 2012, an agreement was reached to end the lockout after increasing criticism of the NFL and the performance of the replacement officials.

The 2012–13 NHL lockout was a labor dispute between the National Hockey League (NHL) and the National Hockey League Players' Association (NHLPA) that began at 11:59 pm EDT on September 15, 2012. A tentative deal on a new collective bargaining agreement (CBA) was reached on January 6, 2013, with its ratification and signing of a memorandum of understanding on the agreement completed by January 12, 2013, 119 days after the expiry of the previous CBA.

The 2011 NBA lockout was the fourth lockout in the history of the National Basketball Association (NBA). Team owners began the work stoppage upon expiration of the 2005 collective bargaining agreement (CBA). The 161-day lockout began on July 1, 2011 and ended on December 8, 2011. It delayed the start of the 2011–12 regular season from November 1 to December 25, and it reduced the regular season from 82 to 66 games. The previous lockout in 1998–99 had shortened the season to 50 games. During the lockout, teams could not trade, sign or contact players. Also, players could not access NBA team facilities, trainers, or staffs.

The 2011 National Football League Player lockout was a work stoppage imposed by the owners of the NFL's 32 teams that lasted from March 12, 2011, to July 25, 2011. When the owners and the NFL players, represented by the National Football League Players Association, could not come to a consensus on a new collective bargaining agreement, the owners locked out the players from team facilities and shut down league operations. The major issues disputed were the salary cap, players' safety and health benefits, revenue sharing and television contracts, transparency of financial information, rookie salaries, season length, and free agency guidelines. During the 18-week, 4-day period, there was no free agency and training camp, and players were restricted from seeing team doctors, entering or working out at team facilities, or communicating with coaches. The end of the lockout coincided with the formation of a new collective bargaining agreement prior to the start of the 2011 regular season.

The 1985 Major League Baseball strike was the fifth work stoppage in Major League Baseball since the 1972 Major League Baseball strike. The strike ran only two days, August 6 and 7. 23 of the 25 games which were scheduled for those days were made up later in the season.

The 1994–95 NHL lockout was a lockout that came after a year of National Hockey League (NHL) hockey that was played without a collective bargaining agreement. The lockout was a subject of dispute as the players sought collective bargaining and owners sought to help franchises that had a weaker market as well as make sure they could cap the rising salaries of players. The lockout caused the 1994–95 season to be shortened to 48 games instead of 84, the shortest season in 53 years.

The 1972 Major League Baseball strike was the first players' strike in Major League Baseball history. The strike occurred from April 1 to 13, 1972.