Nicola Mary Coughlan is an Irish actress. She is known for her roles as Clare Devlin in the Channel 4 sitcom Derry Girls and Penelope Featherington in the Netflix period drama Bridgerton.

She earned a Screen Actors Guild Awards nomination for playing the lead role of Penelope Featherington in the third season of Bridgerton. Coughlan earned a British Academy Television Awards nomination for her role as Maggie Donovan in Big Mood (2024–present). Coughlan was born on 9 January 1987 in Galway, Ireland, and grew up in Oranmore.