Principal photography took place during October 2014 in Portland , Oregon . The film was financed and produced by Broad Green Pictures . '' Green Room '' was screened in the Directors ' Fortnight section at the 2015 Cannes Film Festival . At the 2015 Toronto International Film Festival , the film finished third in the balloting for the Grolsch People 's Choice Midnight Madness Award . The film began a limited release on April 15 , 2016 , before being widely released on May 13 through A24 . It appeared on many critics ' lists as one of the best films of 2016 and received a 2017 Empire Award nomination for Best Horror , but underperformed at the box-office , grossing $ 3.8 million against a budget of $ 5 million
2015 Cannes Film Festival
2015 Cannes Film Festival
Green Room (film)