XOS or Xos may refer to:
Computing XOS (operating system), an Android-based mobile OS Xbox One S, a video game console Xerox Operating System, for XDS Sigma computers XOS 3.0/4.0/5.0, Red Hat Enterprise Linux derivatives
Other uses XOS valuation, in mathematics Xylooligosaccharide, a polymer of the sugar xylose Xos, Inc., an American manufacturer of electric trucks
See also XDOS (disambiguation)