Arthur 3: The War of the Two Worlds is a 2010 English-language French live-action/animated fantasy film directed and co-written by Luc Besson, based on the fourth and final book of the Arthur children's books series by Besson. It is the sequel to Arthur and the Revenge of Maltazard (2009) and the third installment in the Arthur film series. The film was shot back-to-back with the previous installment. It is the last installment in the main series.

Luc Paul Maurice Besson is a French filmmaker. He directed or produced the films Subway (1985), The Big Blue (1988), and La Femme Nikita (1990). Associated with the Cinéma du look film movement, he has been nominated for a César Award for Best Director and Best Picture for his films Léon: The Professional (1994) and The Messenger: The Story of Joan of Arc (1999). He won Best Director and Best French Director for his sci-fi action film The Fifth Element (1997). He wrote and directed the 2014 sci-fi action film Lucy and the 2017 space opera film Valerian and the City of a Thousand Planets.