O2V may refer to:

Vanadium(IV) oxide (O2V; VO2; O2V(IV); V(IV)O2), a chemical compound composed of vanadium and oxygen O-type main-sequence star (OV star) of the O2V subtype

See also

OW (disambiguation) OVV (disambiguation) OV2 (disambiguation) OOV (disambiguation) OV (disambiguation)