Emily Kathleen Anne Mortimer is an English actress and filmmaker. She began acting in stage productions and has since appeared in several film and television roles. In 2003, she won an Independent Spirit Award for her performance in Lovely and Amazing. She is also known for playing Mackenzie McHale in the HBO series The Newsroom (2012–2014). She created and wrote the series Doll & Em (2014–2015) and wrote and directed the miniseries The Pursuit of Love (2021), the latter of which earned her a nomination for the British Academy Television Award for Best Supporting Actress.

Lovely and Amazing is a 2001 American comedy-drama film written and directed by Nicole Holofcener.