The Dallas Cowboys are a professional American football team based in the DallasFort Worth metroplex. The Cowboys compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division. The team is headquartered in Frisco, Texas, and has been playing its home games at AT&T Stadium in Arlington, Texas, since its opening in 2009. The stadium took its current name prior to the 2013 season. In January 2020 it was announced that Mike McCarthy had been hired as head coach of the Cowboys. He is the ninth in the teams history. McCarthy follows Jason Garrett, who coached the team from 20102019.The Cowboys joined the NFL as an expansion team in 1960. The team's national following might best be represented by its NFL record of consecutive sell-outs. The Cowboys' streak of 190 consecutive sold-out regular and post-season games (home and away) began in 2002. The franchise has made it to the Super Bowl eight times, tied with the Pittsburgh Steelers and the Denver Broncos for second most Super Bowl appearances in history, behind only the New England Patriots' record eleven Super Bowl appearances. This has also corresponded to eight NFC championships, most in the NFC. The Cowboys have won five of those Super Bowl appearances, tying them with their NFC rivals, the San Francisco 49ers; both are third to Pittsburgh's and New England's record six Super Bowl championships. The Cowboys are the only NFL team to record 20 straight winning seasons (196685), in which they missed the playoffs only twice (1974 and 1984).

In 2015, the Dallas Cowboys became the first sports team to be valued at $4 billion, making it the most valuable sports team in the world, according to Forbes. The Cowboys also generated $620 million in revenue in 2014, a record for a U.S. sports team. In 2018 they also became the first NFL franchise to be valued at $5 billion and making Forbes' list as the most valued NFL team for the 12th straight year.

The National Football League (NFL) is a professional American football league that consists of 32 teams, divided equally between the American Football Conference (AFC) and the National Football Conference (NFC). The NFL is one of the four major North American professional sports leagues and the highest professional level of American football in the world. Each NFL season begins with a three-week preseason in August, followed by the eighteen-week regular season which runs from early September to the end of December (or in some cases early January), with each team playing seventeen games and having one bye week. Following the conclusion of the regular season, seven teams from each conference (four division winners and three wild card teams) advance to the playoffs, a single-elimination tournament that culminates in the Super Bowl, which is contested in February and is played between the AFC and NFC conference champions. The league is headquartered in New York City.

The NFL was formed in 1920 as the American Professional Football Association (APFA) before renaming itself the National Football League for the 1922 season. After initially determining champions through end-of-season standings, a playoff system was implemented in 1933 that culminated with the NFL Championship Game until 1966. Following an agreement to merge the NFL with the rival American Football League (AFL), the Super Bowl was first held in 1967 to determine a champion between the best teams from the two leagues and has remained as the final game of each NFL season since the merger was completed in 1970. The NFL has the highest average attendance (67,591) of any professional sports league in the world and is the most popular sports league in the United States. The Super Bowl is also among the biggest club sporting events in the world, with the individual games accounting for many of the most watched television programs in American history and all occupying the Nielsen's Top 5 tally of the all-time most watched U.S. television broadcasts by 2015. The NFL is the wealthiest professional sports league by revenue and the sports league with the most valuable teams.The Green Bay Packers hold the most combined NFL championships with thirteen, winning nine titles before the Super Bowl era and four Super Bowls afterwards. Since the creation of the Super Bowl, the New England Patriots and Pittsburgh Steelers have the most Super Bowl victories at six each.