Matthew David Lewis (born 27 June 1989) is an English actor. He is best known for his role as Neville Longbottom in the Harry Potter film series.

Born in Leeds, Lewis made his acting debut in Some Kind of Life (1995), guest-starring on dramas for ITV and BBC One before appearing in Harry Potter and the Philosopher's Stone (2001). Lewis played the role for ten years, concluding with the final film, Harry Potter and the Deathly Hallows – Part 2 (2011), for which he received critical praise. Following the series, Lewis reoccured in The Syndicate and performed his first theatre role in Our Boys at the Duchess Theatre in 2012.