AASOAkademia Alternatywnych Systemow Operacyjnych (Polish)
AASOAfrican-American Student Organization
AASOAnn Arbor Symphony Orchestra (Michigan)
AASOAlbanian American Student Organization
AASOAirborne Atmospheric Science Office
AASOAssociation of American Ship Owners
AASOAboriginal AIDS Service Organizations
AASOAdvanced Audio Server Override (package)
AASOAmerAsian School in Okinawa
AASOArmy Air Supply Organisation
AASOArmy Aeronautical Service Office
AASOAgency Accounting Systems Office
AASOAnalytical Abstraction Stage Operator
AASOAnnual of the American School of Oriental Research (Cambridge, MA)
AASOAssistant Area Staff Officer
AASOAmateur Astronomical Space Observatory
AASOAnn Arbor Society for Origami (Michigan)
AASOAfro-Asian Solidarity Organisation (Egypt)
AASOArab-American Student Organization
AASOAfrican American Student Overnighter
AASOAmplatzer Atrial Septal Occluder
AASOAsian American Student Organization