Peter Szymon Serafinowicz (born July 10, 1972) is an English actor, comedian, director and screenwriter. His film roles include the voice of Darth Maul in Star Wars: Episode I – The Phantom Menace (1999), Pete in Shaun of the Dead (2004), Garthan Saal in Guardians of the Galaxy (2014), the voice of Big Daddy in Sing (2016) and Sing 2 (2021), and The Sommelier in John Wick: Chapter 2 (2017).

On television, Serafinowicz created and starred in the comedy shows Look Around You (2002–2005) and The Peter Serafinowicz Show (2007–2008). He also voiced characters and worked as a creative consultant on South Park (2006–2015), portrayed Edgar Covington in Parks and Recreation (2013–2015), voiced the Fisher King in Doctor Who (2015), and starred as the title character in the live-action adaptation series The Tick (2016). His other television work includes voicing characters in animated series such as Archer, Bob's Burgers, Rick and Morty, The Simpsons, American Dad!, and the second season of What If...?, reprising his live-action role as Garthan Saal.

Serafinowicz has voiced characters in video games such as Dark Souls II (2014), LittleBigPlanet 3 (2014), and Deus Ex: Mankind Divided (2016). He has also directed music videos for acts such as Hot Chip and went viral in 2016 for political satire videos in which he dubbed over videos of Donald Trump with a "sassy" voice, a Cockney accent, and a posh English accent.