Emma Cunniffe (born 3 July 1973) is a British film, stage and television actress.
Her television credits include The Lakes (BBC 1997, 1999), "Biddy" in a TV adaptation of Great Expectations, All the King's Men, Clash of the Santas, alongside Robson Green and Mark Benton, Clocking Off (BBC), and Flesh and Blood with Christopher Eccleston. She also appeared in the sixth series Doctor Who episode "Night Terrors", alongside the Eleventh Doctor played by Matt Smith. She appeared in the BBC documentary The Genius of Mozart as Constanze, Wolfgang's wife. In 2009, she played Carol Boynton in the ITV adaptation of Appointment with Death, in series 11 of Agatha Christie's Poirot. In mid-2014, she played DS Hawthorn in Coronation Street, investigating the circumstances of the attack on and subsequent death of Tina McIntyre (Michelle Keegan) and on 5 January 2015, she played Kenzie Calhoun's mother, Ailsa in Waterloo Road
On stage she won the UK Theatre Awards for Best Actress in a Supporting Role for her performance in The Master Builder in 2000. Her other stage work includes Tales from Hollywood, Losing Louis at the Trafalgar Studios in London and in 2006 Women Beware Women for the Royal Shakespeare Company in Stratford-upon-Avon. She was nominated for "what's on stage" award in 2011 for her role as Elizabeth Proctor in The Crucible at Open Air Theatre, Regent's Park.