Quentin Dupieux (French pronunciation: [kɑ̃tɛ̃ dypjø], born 14 April 1974), also known by his musical stage name Mr. Oizo (French: [wazo]), is a French filmmaker, electronic musician, and DJ.

Dupieux is credited with his legal name for his films, while the name "Mr. Oizo" is used for his musical works.

Dupieux has directed numerous films including Rubber (2010), Wrong (2012), Wrong Cops (2013), and Reality (2014). After initially producing his films in the United States, he began making films in France in 2018. Since then, he has released Keep an Eye Out! (2018), Deerskin (2019), Mandibles (2020), Incredible but True (2022), Smoking Causes Coughing (2022), Yannick (2023) and Daaaaaalí! (2023) which have been primarily filmed and produced in France.

Under the pseudonym Mr. Oizo, he is best known for his 1999 single "Flat Beat". His pseudonym is a corruption of the French oiseau, meaning "bird". He is signed to F Communications, Ed Banger Records and Brainfeeder.