'Simon Werner Has Disappeared...') is a 2010 French thriller film written and directed by Fabrice Gobert and starring Jules Pelissier, Ana Girardot, Arthur Mazet, Laurent Delbecque, Selma El Mouissi, Audrey Bastien, Esteban Carvajal Alegria, Yan Tassin, Serge Riaboukine and Laurent Capelluto.

[4] Principal photography took place from September to November 2009 in the Forest of Sénart near Tigery and at Lycée François Truffaut in Bondoufle.

[1] Lee Marshall of Screen Daily wrote, "This genre-bending high-school thriller-drama about three students who go missing at a French lycee opens like a teen B-movie, but soon moves into more intriguing territory.

"[6] Jordan Mintzer of Variety called it "a deftly realized teen thriller" that is too similar to Elephant.

[18] It was released as part of the Sonic Youth Recordings series, under the title SYR9: Simon Werner a Disparu.