The abbreviation OOA referred to:

  • Object-oriented analysis, see Object-Oriented Analysis and Design
  • Open Ocean Aquaculture
  • Organizations til Oplysning om nuclear power, a former organization against the introduction of nuclear power in Denmark.
  • Ohio Optometric Association
  • Out of Area (NATO abbreviation for military operations outside the NATO area for prophylactic security )
  • Disambiguation
  • Abbreviation