Nicholas John Frost is an English actor, comedian and screenwriter. He has appeared in the Three Flavours Cornetto trilogy of films, consisting of Shaun of the Dead (2004), Hot Fuzz (2007), and The World's End (2013), and the television comedy Spaced (1999–2001). He also appeared in Joe Cornish's film Attack the Block (2011). He co-starred in the 2011 film Paul, which he co-wrote with frequent collaborator and best friend Simon Pegg. He has also portrayed various roles in the sketch show Man Stroke Woman. In 2020, he cocreated and starred in the paranormal comedy horror series Truth Seekers with Pegg.

The Three Flavours Cornetto trilogy is an anthology series of British comedic genre films directed by Edgar Wright, written by Wright and Simon Pegg, and produced by Nira Park. The series stars Pegg, Nick Frost, and Bill Nighy, with several other actors, including Rafe Spall and Martin Freeman, also appearing in all three films. The trilogy consists of Shaun of the Dead (2004), Hot Fuzz (2007), and The World's End (2013).