Bruno Leopoldo Francesco Sammartino (born October 6, 1935) is an Italian former professional wrestler, best known for being the longest-running champion of the World Wide Wrestling Federation (WWWF), holding the title across two reigns for over 11 years in total, as well as the longest single World Heavyweight Championship reign in professional wrestling history.

Sammartino's wrestling ability was more mat-oriented which was typical of wrestlers from his era. His brawling style, power moves, and personal charisma helped him become the most popular American wrestler in the 1960s and 1970s. During the period when Madison Square Garden was the WWWF's primary arena, Sammartino headlined more Garden cards than any other wrestler (roughly 130), including 45 sellouts.