Vo
Vo or VO may refer to:

Businesses and brands
Austrian Arrows (2003-2015, IATA airline code VO)
VLM Airlines Slovenia (2016-2018, 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
Vote ordering, a concurrency control technique for guaranteeing global serializability; a generalization of commitment ordering

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