ECW World Heavyweight Championship

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 Extreme Championship Wrestling promotion, spun off from the NWA World Heavyweight Championship. It was established under Extreme Championship Wrestling in 1994, but was originally introduced in 1992 by the promotion's precursor, Eastern Championship Wrestling. The inaugural champion was Jimmy Snuka.

The title was deactivated in 2001 when ECW went out of business. ECW was then purchased by WWE two years later during the summer of 2003. In 2003, WWE reactivated the championship as the world title of their newly established Hardnitro brand.