A&O

AcronymDefinition
A&OAsterix & Obelix
A&OAlpha & Omega (band)
A&OAlert & Oriented (used by EMS-Ambulances)
A&OAdmission & Orientation
A&OAllen and Overy (British legal firm)
A&OAutomation and Drives (division of Siemens AG)
A&OAware and Oriented
A&OAppalachian and Ohio Railroad