OGF

The abbreviation OGF stands for:

Obergruppenführer , a paramilitary rank in National Socialism (with SA, SS, NSFK and NSKK)
frequently asked questions , see Frequently Asked Questions (FAQ)
Oldenburg Society for Family Studies , a genealogical association
Open Grid Forum , a grid computing body founded in 2006
Optical Glass Fiber , see fiber optic cables
Ostdeutsche Gesellschaft für Forstplanung mbH, a company founded in 1992 with headquarters in Potsdam
United Civic Front (Russian Объединённый гражданский фронт ОГФ ), a Russian political group that participates in the alliance The Other Russia , founded in 2006
OpenGeofiction , a collaborative platform for creating fictional maps based on the OpenStreetMap software platform.

OGF also means:

OGF 19 , the name of the convoy to which the British tanker British Endeavor belonged when it was sunk by the German submarine U 50 in 1940