AOB may refer to: Accessory olfactory bulb, the dorsal-posterior region of the main olfactory bulb Ace of Base, a Swedish pop group ammonia-oxidizing bacteria Angle of bank, in aviation Angle On the Bow, a variable in nautical rangekeeping open bite, in dentistry Antioxidant of bamboo leaves Antyfaszystowska Organizacja Bojowa Assignment of Benefits, medical terminology Any Other Business, an agenda item for free miscellaneous points Austin O'Brien Catholic High School, a Catholic Senior High School in Edmonton, Alberta, Canada Ammonia-oxidizing bacteria, a type of Nitrifying bacteria AoB may refer to: Array of Bytes aob may refer to: Abom language, a nearly extinct language spoken in Papua New Guinea (ISO 639-3 code)