| Group Members | Marc RobergeChris CulosRichard OnBenj GershmanJerry DePizzo |
| Genre | Alternative rockindie rockjam bandroots rock |
| Genre Links | Pop/Rock |
| Origin | Rockville, Maryland, United States |
| Year(s) Active | 1996–present |
| Music Style | Jam Bands, Alternative Pop/ Rock, Adult Alternative Pop/ Rock, Alternative/ Indie Rock |
| Music Mood | Party/Celebratory, Earnest, Freewheeling, Exuberant, Amiable/Good-Natured, Reflective, Energetic, Carefree, Summery, Earthy, Organic, Sensual, Sweet, Playful, Fun, Lush, Yearning |
| Labels | LavaEverfine |
| Official Website | ofarevolution.com |
| Associated Acts | Matt NathansonStephen Kellogg and the SixersBrett DennenFoxtrot Zulu |
O.A.R. (short for Of a Revolution) is an American rock band composed of Marc Roberge (vocals, guitar), Chris Culos (drums, percussion), Richard On (guitar, backing vocals), Benj Gershman (bass guitar), and Jerry DePizzo (saxophone, guitar, percussion, backing vocals). Due to massive online distribution over campus networks, the band has become a hit among college students, with many songs relating to the band members' personal lives at Thomas S. Wootton High School, growing up in Rockville, Maryland and attending Ohio State University.