Posted in Business & Finance, Dictionary, Government & Military, Internet Slang, Organizations, Schools & Education A2A stands for Access to Archives (UK) A2A stands for Account-to-Account (banking) A2A stands for Administration-to-Administration A2A stands for Airline to Airline A2A stands for Air-To-Air (weapon) A2A stands for Application to Application A2A stands for Ashes to Ashes (TV series) A2A