O6 or O-6 may refer to: *

LNER Class O6 The London and North Eastern Railway (LNER) Class O6 was a class of 2-8-0 steam locomotives of the Stanier Class 8F type. Background The LMS Stanier Class 8F 2-8-0 had been chosen by the War Department to be its standard heavy freight loc ...

, a class of British steam locomotives * O6 star, a subclass of O-class stars *

OceanAir Oceanair was a regional airline that was based at Luis Muñoz Marín International Airport in San Juan, Puerto Rico. It competed on domestic routes with Prinair; and on routes to the Virgin Islands with Prinair and with Aero Virgin Islands; ...

IATA airline designator * O-6, a pay grade in the US uniformed services: **

Colonel Colonel ( ; abbreviated as Col., Col, or COL) is a senior military Officer (armed forces), officer rank used in many countries. It is also used in some police forces and paramilitary organizations. In the 17th, 18th, and 19th centuries, a colon ...

in the Army, Marine Corps, Air Force, and Space Force **

Captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader or highest rank officer of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police depa ...

in the Navy, Coast Guard, Public Health Service Commissioned Corps, and NOAA Commissioned Officer Corps * the "Occupied 6", an Irish republican euphemism for

Northern Ireland Northern Ireland ( ; ) is a Countries of the United Kingdom, part of the United Kingdom in the north-east of the island of Ireland. It has been #Descriptions, variously described as a country, province or region. Northern Ireland shares Repub ...

* USS ''O-6'' (SS-67), an O-class submarine of the United States Navy *

Otoyol 6 (), named the Kınalı-Balıkesir Motorway () and abbreviated as O-6, is a planned toll road, toll Otoyol, motorway in Turkey, with an section between Malkara and Lapseki open to traffic. When complete, the route will begin at Kınalı, travel ...

, a motorway in Turkey

See also