NAU Views 12 meanings found NAU commonly refers to Northern Arizona University or the National American University, and is also used for the North Australia region, network access units in telecommunications, and the nautical abbreviation. Miscellaneous Naughty America University Governmental Network Access Unit Nautical Nautilus North American Union Narcotics Assistance Unit Academic & Science National American University Northern Arizona University Regional North Australia Napuka Island, French Polynesia Computing Network Addressable Unit Business Northland Resources S.A. (Société Anonyme) (de-listed)