QOS, QoS or Qos may refer to:
Entertainment Quantum of Solace, a James Bond story from the collection For Your Eyes Only Quantum of Solace, a 2008 James Bond film A Question of Sport, a BBC television quiz show
Technology Quality of service, in computer networking, telephony etc. Quarterdeck Office Systems, a software company now part of Symantec
Other meanings Queen of the South F.C., a Scottish football club Qos (deity), the national god of the Edomites Queen of spades, the playing card
See also Queensland Ornithological Society Inc (QOSI), a state birding organisation in Australia QDOS (disambiguation)