Katy Wix (born 28 February 1980) is a Welsh actress and comedian. She is best known for her television roles as Daisy in Not Going Out (2007–2015), Carole in Stath Lets Flats (2018–), Mary in Ghosts (2019–) and Sarah Ferguson in The Windsors (2016–).

She has also appeared in Outnumbered (2010), Miranda (2009) and as a regular contestant in series 9 of Taskmaster (2019). In 2007, she joined the cast of sitcom Not Going Out as recurring character Daisy and then went on to be a regular from Series 3. In Torchwood: Children of Earth she plays Rhiannon Davies.