William Francis Nighy (; born December 12, 1949) is an English actor.
He worked in theatre and television before his first cinema role in 1981, and made his name in television with The Men's Room in 1991, in which he played the womaniser Professor Mark Carleton.
Nighy became widely known for his performance as Billy Mack in Love Actually.
Other notable roles in cinema include his portrayal of Davy Jones in Pirates of the Caribbean film series as well as Viktor in the Underworld film series.
He is also known for his roles in the films Lawless Heart, I Capture the Castle, Shaun of the Dead, The Hitchhiker's Guide to the Galaxy, Notes on a Scandal, Hot Fuzz, Valkyrie, Harry Potter and the Deathly Hallows – Part 1, Rango and The Best Exotic Marigold Hotel.