XNS may refer to:

• Xerox Network Systems, an early computer networking protocol suite
• Extensible Name Service, an XML-based digital identity architecture
• Christians (shorthand slang)

• Oliver Douglas
• Oliver Driver
• Oliver Dulic
• Oliver Dulić
• Oliver Dziubak
• Oliver Ebaačević
• Oliver E. Buckley Condensed Matter Prize
• Oliver Eden, 8th Baron Henley
• Oliver, Edmonton
• Oliver Edward Michael Campbell
• Oliver Edwin Baker
• Oliver Ellsworth Homestead
• Oliver Elmes
• Oliver Elton
• Oliver Emles
• Oliver Ernest Goonetilleke
• Oliver Eyre Crosthwaite-Eyre
• Oliver Farnworth
• Oliver Farrington
• Oliver Fartach-Naini
• Oliver (film)
• Oliver! (film)
• Oliver Fisher
• Oliver Fitzwilliam, 1st Earl of Tyrconnel
• Oliver FitzWilliam, 1st Earl of Tyrconnell