O.F.R. (Out-Fucking-Rageous) is the debut studio album by American heavy metal band Nitro. Recorded at Front Page Productions in Costa Mesa, California, it was written and produced by vocalist Jim Gillette and guitarist Michael Angelo, with Bob Cahill and Charlie Watts co-producing. O.F.R. was released in 1989 by Rampage Records, a sub-label of Rhino Entertainment.