The O'Reilly Theatre is a flexible studio theatre on Blackhall Road, central north Oxford, England. It is located within Keble College, one of the University of Oxford colleges. The theatre was completed in 2002. Seating capacity of the space ranges from 128 to 200, depending on the setup chosen. The standard configuration is end-on, but alternatives include traverse and in-the-round. The theatre is named after Tony O'Reilly, the billionaire Irish businessman and former international rugby union player, who contributed most of the funds.