Outsider often refers to one identified as on the periphery of social norms, one living or working apart from mainstream society, or one observing a group from the outside, as used in: Outsider Art, created by artists working outside the mainstream art world Outsider music, composed or performed by musicians working outside the musical mainstreamOutsider may also refer to:In film: Outsider , a 1997 Slovenian film Outsiders , a 2004 Singaporean film