O7
# O7

O7 may refer to:

* O7 star, a subclass of O-type stars
* LNER Class O7, a class of British steam locomotives
* O7, the IATA airline designator for OzJet
* o7, an emoticon for a person saluting
* O-7, a pay grade in the US uniformed services:
   * Brigadier General in the Army, Marine Corps, Air Force, and Space Force
   * Rear admiral (lower half) in the Navy, Coast Guard, Public Health Service Commissioned Corps, and NOAA Commissioned Officer Corps
