Jessica Regan (born 24 February 1982) is an Irish actress, known for portraying the role of Niamh Donoghue in the BBC soap opera Doctors. For her portrayal of the role, she won the award for Best Female Acting Performance at the 2014 RTS Midlands Awards, as well as the award for Best Newcomer at the 2015 British Soap Awards. Following her departure from Doctors, she starred in the BBC series Ill Behaviour. Regan also has numerous stage credits, having starred in productions including Blood and Gifts and Long Day's Journey into Night.