Katherine Ryan (born 30 June 1983) is a Canadian comedian, writer, presenter and actress, based in the United Kingdom. She has appeared on British panel shows including Mock the Week, Never Mind the Buzzcocks, A League of Their Own, 8 Out of 10 Cats, Would I Lie to You?, QI, Just a Minute, Safeword, and Have I Got News for You. In 2015, she replaced Steve Jones as the presenter of Hair on BBC Two. As an actress, she has appeared in the Channel 4 sitcom Campus, BBC Two sitcom Episodes and Don't Sit in the Front Row with Jack Dee. Ryan and her two younger sisters were born and raised in Sarnia, Ontario.
As a stand-up comedian, Ryan has appeared on the BBC's Live at the Apollo, both as a featured act and as a lead act. For her work, Ryan won the Nivea Funny Women Award, and was also runner-up in the Amused Moose Laugh-Off competition in 2008. In February 2017, Netflix released Katherine Ryan: In Trouble which features one of her live stand-up performances on a recent UK tour. Ryan first appeared on television as herself on Channel 4's 8 Out of 10 Cats in 2012. She had previously appeared in the cast of Channel 4's Campus. On 23 February 2013, she appeared as a celebrity contestant on BBC One's Let's Dance for Comic Relief as Nicki Minaj dancing to "Starships". While attending university, she worked at Hooters and then began training other waitresses. She was fired from Hooters for writing on a board "club sandwiches not seals".