Margaret Alice Cabourn-Smith (born 1975) is an English comedy actress and podcaster with appearances on Catastrophe, The IT Crowd, Psychoville, Peep Show, Fresh Meat, Motherland, Daddy Issues and Cheaters.

Her TV work includes playing regular characters on Miranda, Katy Brand's Big Ass Show, Lab Rats, In and Out of The Kitchen and Father Figure.

She played Crimson in Disney Channel's The Evermoor Chronicles.

Her radio work includes many of The Penny Dreadfuls' plays, John Finnemore's Souvenir Programme. The Now Show, Sarah Millican's Support Group, The Maltby Collection, Bigipedia, Newsjack, Dilemma, Another Case of Milton Jones, Life in London, The Headset Set and 1966 and All That. She was also one of the team captains on the comedy podcast Do The Right Thing.

Stage work includes Di & Viv & Rose at the Stephen Joseph Theatre, Scarborough, Spike (Watermill Theatre and national tour), Angus, Thongs & Even More Snogging (West Yorkshire Playhouse 2012) and Gutted (Assembly Rooms, 2010)

She writes for online magazine Standard Issue. She is married to comedy writer and actor Dan Tetsell.