Thank God It's Friday (film), a 1978 movie about disco culture "Thank God It's Friday" (Love & Kisses song), a 1978 song from the film of the same name Thank God It's Friday (soundtrack), the soundtrack to the film of the same name "Thank God It's Friday" (R. Kelly song), a 1996 single by R. Kelly "Last Friday Night (T.G.I.F.)", a 2011 single by Katy Perry T.G.I. Friday's, an American restaurant chain