Guillaume Nicloux (French pronunciation: [ɡijom niklu]; born 3 August 1966) is a French novelist, director and actor.

He is the founder of the theatre company La Troupe.

He has written crime fiction and directed films for cinema and French television.

[1] He won the Best Screenplay Award at the 2014 Tribeca Film Festival for The Kidnapping of Michel Houellebecq, a comedic interpretation of a rumoured abduction of the writer Michel Houellebecq, starring Houellebecq as himself.

[2] His 2015 film Valley of Love was selected to compete for the Palme d'Or at the 2015 Cannes Film Festival.