Jamie Demetriou (; born 1 November 1987) is an English comedian, actor and screenwriter. He is best known for his role as Bus Rodent in Fleabag and for creating, co-writing, and starring in Stath Lets Flats. For the latter, he won Best Male Actor in a Comedy, Best Writer of a Comedy, and Best Scripted Comedy at the 2020 BAFTA Awards.