Mathew "Mat" Baynton (born 18 November 1980) is an English actor, writer, comedian, singer, and musician. He is best known as the co-creator, writer and star of the sitcoms The Wrong Mans and Yonderland, as well as a member of the starring troupe of children's sketch comedy Horrible Histories. Other major television roles include Deano in Gavin & Stacey, Chris Pitt-Goddard in Spy, and twin brothers Jamie Winton and Ariel Conroy in You, Me and the Apocalypse.
Baynton was born in Southend-on-Sea, Essex, the youngest of three brothers. He was educated at Southend High School for Boys. He graduated with first class honours from the Rose Bruford College of Speech and Drama, and later trained in clowning at École Philippe Gaulier in Paris. Baynton explained his motivation in an interview with Metro, "The performing instinct came from making my family laugh, so I've always been drawn to the funny side of things. Comedy is really rewarding."
In 2009, Baynton featured in the video for The Maccabees' single "No Kind Words" alongside Mathew Horne.