Simon Mark Monjack (9 March 1970 – 23 May 2010) was an English screenwriter, film director, producer and make-up artist.

[8] He received story credit for the 2006 biographical film Factory Girl about Warhol actress/model Edie Sedgwick.

[9] Director George Hickenlooper contended that "Monjack had nothing to do with Factory Girl" and that "he filed a frivolous lawsuit against us [...] making bogus claims that we had stolen his script.

News reported that Monjack was slated to direct a film adaptation of D. M. Thomas's novel about Sigmund Freud, The White Hotel, with Brittany Murphy cast in a leading role, but the movie was never made.

According to the testimony of his ex-fiancée, Elizabeth Ragsdale, Monjack "was a disturbed individual who was used to conning people and Brittany was one of his latest victims.

[12] In February 2007, Monjack was arrested and spent nine days in jail, facing deportation, because his visa to the United States had expired.