OASYS may refer to: Brands and enterprises OASys (company), a 100% subsidiary of Webasto Accuvue Oasys, a brand of contact lenses
Computing and technology Korg OASYS, a workstation synthesizer released in early 2005 Omgeo OASYS, US financial markets trade confirmation service OASys, an acronym for the Offender Assessment System, an IT system used by HM Prisons and the National Probation Service in England and Wales
See also Oasis (disambiguation)