Jigsaw (William "Billy" Russo, also known as "The Beaut" before his disfigurement) is a supervillain appearing in American comic books published by Marvel Comics. Created by writer Len Wein and artist Ross Andru, the character made his first full appearance in The Amazing Spider-Man #162 (November 1976). He is depicted as an enemy of the Punisher and Spider-Man as well as a recurring foe of Daredevil.

The character was portrayed by Dominic West in the film Punisher: War Zone and Ben Barnes in the Marvel Cinematic Universe / Netflix series The Punisher.