Vo or VO may refer to:
Businesses and brands Austrian Arrows (2003–2015, IATA airline code VO) VLM Airlines Slovenia (2024–2025, IATA airline code VO) Seagram's VO Whiskey
Language Volapük language (ISO 639-1 code vo) VO language, a language in which the verb typically comes before the object Vo (Armenian letter)
Places Vo', a commune in the Province of Padua, Italy Vo, Togo, a prefecture in Togo Vojvodina, an autonomous province in Serbia (ISO 3166-2 code RS-VO)
Science and technology Value Object or similarly data transfer object, in computing Vanadium(II) oxide, an inorganic compound Velocity obstacle, the set of velocities of a robot that will result in a collision with another robot Virtual Observatory, in astronomy Visual Objects, an object-oriented computer programming language
Other uses Võ, a Vietnamese surname Vendetta Online, a computer game Virtual organization, an organization involving detached and disseminated entities Voice-over, a production technique in film, radio, and other media