OAO, a
three-letter acronym
A three-letter acronym (TLA), or three-letter abbreviation, is an abbreviation consisting of three letters. These are usually the initial letters of the words of the phrase abbreviated, and are written in capital letters (upper case); three-lette ...
, may stand for:
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Orbiting Astronomical Observatory
The Orbiting Astronomical Observatory (OAO) satellites were a series of four American space observatories launched by NASA between 1966 and 1972, managed by NASA Chief of Astronomy Nancy Grace Roman. These observatories, including the first su ...
, the name of four NASA scientific satellites
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Open joint-stock company (russian: Открытое Aкционерное Oбщество), business incorporation in Russia, Ukraine etc.
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Odessey and Oracle
''Odessey and Oracle'' is the second studio album by English rock band the Zombies. It was originally released in the UK in April 1968 by CBS Records.
The album was recorded primarily between June and August 1967. The sessions took place at ...
, 1968 album by The Zombies
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Oddworld: Abe's Oddysee a platform game made by Oddworld Inhabitants released in 1997
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Over and Out (disambiguation)
Over and Out is a combination of the Procedure words OVER and OUT.
Albums
* ''Over and Out'' (Tar album)
* ''Over and Out'' (Rick Parfitt album)
Songs
* "Over and Out", by Foo Fighters from their album ''In Your Honor''
* "Over and Out", by Pa ...
, various meanings including the usual ending of transmissions in telecommunications
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Open-access operator
In rail transport in Europe, an open-access operator is a train operating company that takes full commercial risk, running on infrastructure owned by a third party and buying paths on a chosen route and in countries where rail services run under ...
, a British passenger rail company which does not hold a franchise
{{Disambiguation