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).