OAG

OAG or Oag may refer to:

Air travel

 * Orange Airport (IATA code), New South Wales, Australia
 * OAG (company), also known as Official Airline Guide, a UK-based air travel intelligence company

Offices

 * Office of the Auditor General (disambiguation)
 * Office of the Advocate General for Scotland
 * Ohio Attorney General, United States

Other uses

 * OAG (band), a Malaysian rock band
 * Overly Attached Girlfriend, a 2012 internet meme
 * Optical axis gratings
 * Ottawa Art Gallery, Canada
 * Jamie Oag (born 1966), Scottish businessman
 * Organizational-activity game, for facilitating organisational change