Katherine Kelly is an English actress. She rose to prominence with her portrayal of Becky McDonald on the ITV soap opera Coronation Street (2006–2012), for which she received multiple awards, including the British Soap Award for Best Actress (2009) and the NTA for Best Serial Drama Performance (2012).

Kelly's subsequent television roles include Lady Mae in Mr Selfridge (2013–2014, 2016), DI Jodie Shackleton in Happy Valley (2016), Miss Andrea Quill in Class (2016), Jane Lowry in Strike Back (2017–2018), DCI Natalie Hobbs in Criminal: UK (2019–2020), Elizabeth Sutherland in Gentleman Jack (2019–2022), DI Karen Renton in Liar (2020), Sally Wright in Innocent (2021), and Angela van Den Bogerd in Mr Bates vs The Post Office (2024).