# O6

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> Source: https://en.wikipedia.org/wiki/O6
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> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**O6** or **O-6** may refer to:

- [LNER Class O6](/source/LNER_Class_O6), a class of British steam locomotives
- O6 star, a subclass of [O-class stars](/source/O-type_main-sequence_star)
- [OceanAir](/source/OceanAir) IATA airline designator
- O-6, a [pay grade in the US uniformed services](/source/Uniformed_services_pay_grades_of_the_United_States): - [Colonel](/source/Colonel_(United_States)) in the Army, Marine Corps, Air Force, and Space Force - [Captain](/source/Captain_(United_States_O-6)) 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](/source/Northern_Ireland)
- [USS *O-6* (SS-67)](/source/USS_O-6_(SS-67)), an O-class submarine of the United States Navy
- [Otoyol 6](/source/Otoyol_6), a motorway in Turkey

## See also

- [06 (disambiguation)](/source/06_(disambiguation))
- [6O (disambiguation)](/source/6O_(disambiguation))

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Adapted from the Wikipedia article [O6](https://en.wikipedia.org/wiki/O6) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/O6?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.