Rhys Ifans (born 1967) is a Welsh actor and musician who has a reputation for being slightly mad and off-color.
- Notting Hill (1999) as Spike
- The Replacements (2000) as Nigel Gruff
- Little Nicky (2000) as Adrian
- Christmas Carol The Movie (2001) as Bob Cratchit
- Vanity Fair (2004) as William Dobbin
- Garfield: A Tail of Two Kitties (2007) as McBunny
- The Boat That Rocked (2009) as Gavin Kavanaugh
- Greenberg (2010) as Ivan Schrank
- Harry Potter and the Deathly Hallows (2010) as Xenophilius Lovegood
- Exit Through the Gift Shop (2010) as the narrator
- Anonymous (2011) as Edward de Vere
- Neverland (2011) as Jimmy Hook
- The Amazing Spider-Man (2012) as Dr. Curt Connors/The Lizard
- Elementary (2013) as Mycroft Holmes
- Patriotic Fervor: Very proud of being Welsh. Once made a comment that seemed supportive of a militant nationalist group. Nevertheless did a pretty good Fake Irish in Deathly Hallows to match Evanna Lynch's portrayal of Luna as Irish.
- Perma Stubble
- Promoted Fanboy: Like Andrew Garfield, he was also a huge Spider-Man fan long before playing The Lizard.