Emily Olivia Leah Blunt (born 23 February 1983) is an English-American actress. She is the recipient of several accolades, including one Golden Globe Award and has been nominated for two competitive British Academy Film Awards.

Educated in the performing arts at the Hurtwood House in Dorking, Blunt made her acting debut in a 2001 stage production of The Royal Family. She went on to appear in the television film Boudica and portrayed the ill-fated queen consort Catherine Howard in the miniseries Henry VIII (both 2003), following which she made her feature film debut in the 2004 drama My Summer of Love. Blunt's breakthrough came in 2006 when she starred in the television film Gideon's Daughter and the highly successful American comedy film The Devil Wears Prada. The former won her a Golden Globe Award for Best Supporting Actress and the latter earned her a nomination for the BAFTA Award for Best Actress in a Supporting Role.

Blunt's profile continued to expand as she took on leading roles in the period film The Young Victoria (2009), the romantic comedy Salmon Fishing in the Yemen (2011), the science fiction films The Adjustment Bureau (2011), Looper (2012), and Edge of Tomorrow (2014), and the musical fantasy Into the Woods (2014). She was praised for playing a principled FBI agent in the crime film Sicario (2015) and an alcoholic woman in the thriller The Girl on the Train (2016); for the latter she received nominations for the Screen Actors Guild Award for Outstanding Performance by a Female Actor in a Leading Role and the BAFTA Award for Best Actress in a Leading Role. In 2018, Blunt starred alongside her husband, John Krasinski, in the acclaimed horror film A Quiet Place, and will next star as Mary Poppins in the musical fantasy film Mary Poppins Returns.