Lee John Martin Evans (born 25 February 1964) is a British former comedian, actor, musician, singer, and writer. He co-founded the production company Little Mo Films with Addison Cresswell, who was also his agent prior to Cresswell's death in December 2013. Evans became one of the United Kingdom's most popular stand-up comedians, with his Roadrunner tour grossing £12.9 million.

He made his cinema debut with the Jerry Lewis comedy Funny Bones (1995), earning the Paris Film Festival Award for Best Actor, and went on to appear in the Hollywood films The Fifth Element (1997), Mouse Hunt (1997), There's Something About Mary (1998), The Ladies Man (2000), and The Medallion (2003). He lent his voice to Zipeau the Troodon in the Emmy-nominated miniseries Dinotopia (2002) and made a notable departure from comedy with a leading role in the Irish thriller film Freeze Frame (2004).

In 2008, the DVD of Evans' Big – Live at the O2 show became the highest-selling Christmas DVD in the United Kingdom, only to be surpassed by his own Monsters Tour DVD in 2014. In November 2014, he announced his retirement from stand-up comedy. In 2017, he briefly came out of retirement to star in a run of William Shakespeare and Harold Pinter plays. Evans is also a singer and musician, as shown on his arena tours; he can play the guitar, bass guitar, keyboards, piano, turntables, mandolin, ukulele, and drums.