OP

OP stands for:

Head of Operation at Fleet Command ( Flag Officer )
Air Panama International, IATA code of a former state-owned airline of Panama
Channel operator on Internet Relay Chat
Oberhessische Press, a regional newspaper for the district of Marburg -Biedenkopf, which is laid on weekdays
Compulsory program as part of the Swiss military service, see Shooting beings out of service
Observation post ( German: observation point ), a military outpost ( see, eg, Observation Post North )
Offenbach-Post, a regional daily newspaper, which mainly finds its distribution area in the city of Offenbach am Main and in the Offenbach district
Unpaid item, a term used in accounting
Open point, that is, for example, a software error, which is yet to fix, see patch (software)
Omnes pro, often in a connection- related student expression used for a unanimous result
One Piece, a manga series and its Anime implementation
Operation (medicine), an instrumental surgery on or in the body of a patient for the purpose of therapy, less frequently, the diagnosis
Operating room, a special room in a hospital or doctor's office, be performed in the operations
Operation ( military ) so that temporally and spatially coherent actions of forces on the one hand, in the military sense is directed toward a common goal
Operational amplifier, an integrated component in the electronics
Operator Panel, an operating unit for machine control, see User Interface
Orange Pekoe, a grade of black tea
Original post on the Usenet, click the first post in a thread (Internet)
Original posters on the Usenet, those who created the first ( original ) post in a thread (Internet)
Original package of a drug as a shortcut on the prescription
Overhead projector, the overhead projector
Overpowered in the gaming scene
Pakistan after the ICAO code
The Opera metro station, home of the Nuremberg U -Bahn

OP as distinguishing signs on license plate:

Germany: Rhein- Wupper -Kreis ( discontinued)
Greece: Orestiada
Netherlands: semi-trailer
Austria: District Oberpullendorf
Poland: county-level city of Opole
Czech Republic: Okres Opava, German: Opava ( discontinued)

O.P. stands for:

Automobiles OP, was a French manufacturer of automobiles
Ordo fratrum praedicatorum, Order of Preachers, Latin for the Order of the Dominicans

Op stands for:

Opus ( work )