Vos or VOS may refer to:

In computing:

  • Hitachi VOS, a mainframe computer operating system by Hitachi Data Systems
  • Stratus VOS, a fault-tolerant computer operating system, developed by Stratus
  • Virtual Object System, a free and open platform for multiuser 3D virtual reality and interactive, collaborative 3D virtual spaces
  • Virtual Orchestra Studio PC video game, 1997
  • Virtual Operating System An Virtual Operating System made with YYGM (Yoyo game maker)
  • Veritas Operations Services, a web-based suite of services

Other uses:

  • Verb–object–subject, in linguistic typology
  • Voluntary observing ship program, in meteorology
  • Vos (surname), people with the surname Vos
  • Vos (Spanish), a second person singular pronoun, used in place of tú in some countries
  • V.O.S. (Spanish), "versión original subtitulada", a movie in original version with subtitles
  • V.O.S, a K-pop South Korean boy band
  • Vintage Original Spec, a series of Gibson custom historic solidbody guitars
  • v.o.s. Czech company designator (veřejná obchodní společnost), similar to inc./LLP/LLC