National Wrestling Alliance in the context of "Triple Crown (professional wrestling)"

World Championship Wrestling (WCW) was an American professional wrestling promotion founded by Ted Turner in 1988, after Turner Broadcasting System, through a subsidiary named Universal Wrestling Corporation, purchased the assets of National Wrestling Alliance (NWA) territory Jim Crockett Promotions (JCP) (which had aired its programming on TBS).

For all of its existence, WCW was one of the two top professional wrestling promotions in the United States alongside the World Wrestling Federation (WWF, now WWE), at one point surpassing the latter in terms of popularity. After initial success through utilization of established wrestling stars of the 1980s, the company appointed Eric Bischoff to executive producer of television in 1993. Under Bischoff's leadership, the company enjoyed a period of mainstream success characterized by a shift to reality-based storylines, and notable hirings of former WWF talent. WCW also gained attention for developing a popular cruiserweight division, which showcased an acrobatic, fast-paced, lucha libre-inspired style of wrestling. In 1995, WCW debuted their live flagship television program Monday Nitro, and subsequently developed a ratings competition against the flagship program of the WWF, Monday Night Raw, in a period now known as the Monday Night War. From 1996 to 1998, WCW surpassed their rival program in the ratings for 83 consecutive weeks.

The WWE Championship, also referred to as the Undisputed WWE Championship since April 2024, is a men's professional wrestling world heavyweight championship created and promoted by the American promotion WWE, defended on the SmackDown brand division. It is one of two men's world titles on WWE's main roster, along with the World Heavyweight Championship on Raw. The current champion is Cody Rhodes, who is in his second reign. He won the title by defeating previous champion John Cena in a Street Fight on Night 2 of SummerSlam on August 3, 2025.

The original world championship of the promotion, it was established by the then-World Wide Wrestling Federation (WWWF) on April 25, 1963, as the WWWF World Heavyweight Championship, after the promotion seceded from the National Wrestling Alliance (NWA) following a dispute over the NWA World Heavyweight Championship. The inaugural champion was Buddy Rogers. Since its inception, the title has undergone many name changes due to company name changes and title unifications. It is the oldest championship currently active in WWE, and is presented as being the promotion's most prestigious title, with many matches for the title having headlined pay-per-view and livestreaming events—including WWE's flagship event WrestleMania. In professional wrestling in general, it is considered to be one of the most prestigious championships of all time.

The American professional wrestling promotion WWE has maintained several men's world championships since Capitol Wrestling Corporation seceded from the National Wrestling Alliance in 1963 to become the World Wide Wrestling Federation (WWWF), which was later subjected to various name changes, including World Wrestling Federation (WWF) and World Wrestling Entertainment (WWE)—in April 2011, the company ceased using its full name and has since just been referred to as WWE. The company's first world championship was the WWE Championship, which was established along with the promotion's creation in 1963 as the WWWF World Heavyweight Championship; it is still active today as the Undisputed WWE Championship and is WWE's oldest active title. Whenever the WWE brand extension has been implemented (2002–2011; 2016–present), separate world championships have been created or allocated for each brand.

As of 2025, WWE promotes two men's world championships, with the Undisputed WWE Championship on the SmackDown brand and the World Heavyweight Championship on Raw. The NXT Championship (created in 2012), was the world championship for the NXT brand from 2019 until 2021 when it was viewed a third major brand, though it reverted to its status as a developmental championship in 2021.

The ECW World Heavyweight Championship was a professional wrestling world heavyweight championship originally used in Extreme Championship Wrestling (ECW) and later, World Wrestling Entertainment (WWE). It was the original world title of the ECW promotion, spun off from the NWA World Heavyweight Championship. It was established under ECW in 1994 but was originally introduced in 1992 by the promotion's precursor, Eastern Championship Wrestling, a territory of the National Wrestling Alliance (NWA). The inaugural champion was Jimmy Snuka in 1992; however, WWE considers the inaugural world heavyweight champion to be Shane Douglas, with his reign beginning on August 27, 1994, when Eastern Championship Wrestling split from the NWA to become Extreme Championship Wrestling.

The title was deactivated in 2001 when ECW ceased all of its operations. The assets of ECW were then purchased by WWE in 2003. In 2006, WWE reactivated the championship as the world title of their newly established ECW brand. It was the third concurrently active world championship in the promotion, complementing the WWE Championship and World Heavyweight Championship of the other two brands, Raw and SmackDown. The ECW Championship then briefly appeared as the sole world title of the Raw brand in 2008 as a result of that year's draft. When WWE disbanded the ECW brand in 2010, the championship was subsequently retired following the final episode of ECW with Ezekiel Jackson as the final titleholder, who consequently had the shortest reign at 2 minutes, 25 seconds as he won it during the episode.