John Paul Guido Boucher Scherrer (September 12, 1967 – June 3, 2023), better known by his screen name John Regala, was a Filipino actor and environmentalist. He gained notoriety in the entertainment industry as a member of the 1986 television show That's Entertainment, and went on to play well-known antagonist roles in action movies and teleseries in the 1990s. He was sometimes unofficially tagged as the "Bad Boy" of Philippine action films along with fellow action stars like Robin Padilla and the late Ace Vergel.

Regala was one of the most gifted Filipino actors and one of the most controversial actors in local show business. In 1994, he was nominated for 'Best Supporting Actor' at the Gawad Urian Awards for his performance in The Fatima Buen Story. In 2011, he won 'Best Supporting Actor' at the 37th Metro Manila Film Festival for the film Manila Kingpin: The Asiong Salonga Story.