O6
O6 may refer to:
- O6 star, a subclass of O-class stars
- OceanAir IATA airline designator
- the pay grade of a Colonel in the United States military (or a Captain in the U.S. Navy or Coast Guard)
- The Occupied 6, an Irish republican euphemism for Northern Ireland
See also
This disambiguation page lists articles associated with the same title formed as a letter–number combination.
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