David Thewlis is an English actor, director, screenwriter, and author. His most commercially successful role to date has been that of Remus Lupin in the Harry Potter film series.

Thewlis has combined major motion picture work with prominent television roles, including playing antagonist V.M. Varga in the third season of Fargo, a role for which he received a 2017 Emmy award nomination for Outstanding Supporting Actor in a Limited Series or Movie.