Laura Donnelly (born 24 June 1982) is an actress from Northern Ireland. She is the recipient of a Laurence Olivier Award as well as a nomination for a Tony Award. On television, she is known for her roles in the Starz series Outlander (2014-2017), the ITV series Beowulf (2016), and the HBO series The Nevers (2021-2023).

Donnelly grew up in Belfast, Northern Ireland, and graduated from the Royal Scottish Academy of Music and Drama in 2004.

She made her on-screen debut in 2005 in the Channel 4 drama Sugar Rush. She is also known for her regular appearances in Outlander, and Britannia, and as a main character in the Irish film Insatiable (2008).

In 2013, Donnelly played a main role: that of Sarah Kay in The Fall.

In 2018, she won the Laurence Olivier Award for Best Actress for her performance in The Ferryman. In 2019 she was nominated for a Tony Award for Best Actress for the same role on Broadway.

She played a lead role as Amalia True in HBO's The Nevers (2021).