Deborah Findlay is an English actress.

Her TV credits include the recurring character Greer Thornton in 4 of the 6 episodes of State of Play, and in the episode The French Drop (2004) in Foyle's War. She also appeared in 4 episodes of the 2001 series of The Armstrong and Miller Show. In Autumn 2007 she appeared with Judi Dench, Imelda Staunton and Francesca Annis in the BBC1 costume drama series Cranford playing the role of the endless spinster Miss Augusta Tompkinson as well as in Wilfred Owen: A Remembrance Tale. She portrayed Home Secretary Denise Riley in Torchwood's 2009 third series Children of Earth, and featured as lawyer Gemma King in one episode of the BBC1 series Silent Witness in January 2010.