Sid Vicious (nacido John Simon Ritchie,1 Lewisham, Londres, Inglaterra, 10 de mayo de 1957 - Nueva York, Estados Unidos, 2 de febrero de 1979) fue un músico británico. Es recordado como una de las figuras míticas de la explosión del punk de los años 70 y por su turbulenta relación con la groupie estadounidense Nancy Spungen. También se le acredita como el que introdujo el baile pogo en la escena punk, en el 100 Club. Nacido como John Simon Ritchie, después conocido como John Beverley, fue miembro de tres bandas del círculo punk, Siouxsie & the Banshees —con quienes tocó la batería en el festival punk del 100 Club—, The Flowers of Romance —donde cantaba y tocaba instrumentos diversos— y Sex Pistols, con quienes funcionó como bajista y grabó un álbum, Never Mind the Bollocks, Here's the Sex Pistols, en 1977.5 En enero de 1978, al final de una turbulenta gira por Estados Unidos, se anunció la disolución de Sex Pistols. En los meses siguientes, Vicious y los dos miembros restantes de la banda, Steve Jones y Paul Cook, grabaron una serie de canciones para la película sobre la versión de Malcolm McLaren de la historia de la banda, The Great Rock 'n' Roll Swindle. Vicious murió de una sobredosis de heroína el 2 de febrero de 1979.
John Beverly, born John Simon Ritchie, later named Sid Vicious (10 May 1957 – 2 February 1979), was an English musician, most famous as the bass guitarist of the influential punk rock band the Sex Pistols, and notorious for his arrest for the alleged murder of his girlfriend, Nancy Spungen. Vicious joined the Sex Pistols in early 1977 to replace Glen Matlock, who had fallen out of favour with the rest of the group. Due to intravenous drug use, Vicious was hospitalised with hepatitis during the recording of the band's only studio album Never Mind the Bollocks. Accordingly, his bass is only partially featured on one song from the album. Vicious would later appear as a lead vocalist, performing three cover songs, on the soundtrack to The Great Rock 'n' Roll Swindle, a largely fictionalised documentary about the Sex Pistols, produced by the group's former manager Malcolm McLaren and directed by Julien Temple. During the Sex Pistols' brief, chaotic ascendancy, Vicious met eventual girlfriend and manager Nancy Spungen, and the pair entered a destructive codependent relationship based on drug use. This culminated in Spungen's death from an apparent stab wound while staying in New York City's Hotel Chelsea with Vicious. Under suspicion of having committed Spungen's murder, Vicious was released on bail; he was later arrested again for assaulting Todd Smith, brother of Patti Smith, at a night club, and underwent drug rehabilitation on Rikers Island. In celebration of Vicious' release from prison, his mother hosted a party for him at his girlfriend's residence in Greenwich Village, which was attended notably by the Misfits bassist Jerry Only. Vicious' mother had been supplying him with drugs and paraphernalia since he was young; late that night she assisted him in procuring heroin, and he died in his sleep after overdosing on it. Less than four weeks after Vicious' death, the soundtrack album of The Great Rock 'n' Roll Swindle was released. On 15 December of that year, a compilation of live material recorded during his brief solo career was packaged and released as Sid Sings. In the 1986 feature-film Sid and Nancy, Gary Oldman gave a much-acclaimed performance as Sid.