OSS 117: Lost in Rio is a 2009 French spy comedy film co-written and directed by Michel Hazanavicius. It is a sequel to Hazanavicius' OSS 117: Cairo, Nest of Spies (2006), and sees Jean Dujardin reprising his role as French secret agent Hubert Bonisseur de La Bath / OSS 117. Set in 1967, Lost in Rio sees OSS 117 sent to Brazil in order to retrieve a microfilm list of French Nazi sympathizers, only to once again unknowingly set foot into a bigger international intrigue.

Michel Hazanavicius is a French film director, screenwriter, editor, and producer. He is best known for his 2011 film, The Artist, which won the Academy Award for Best Picture at the 84th Academy Awards. It also won him the Academy Award for Best Director. He also directed spy film parodies OSS 117: Cairo, Nest of Spies (2006) and OSS 117: Lost in Rio (2009).