XNS

XNS or xns may refer to:

Computing

 * Xerox Network Systems, an early computer networking protocol suite
 * Extensible Name Service, an XML-based digital identity architecture

Other uses

 * Kanashi language (ISO 639:xns), a Sino-Tibetan language
 * Navtech System Support (IATA code: XNS), in the List of airline codes
 * Christians (XNS), in the List of acronyms: X