KAOS or Kaos may refer to:

• Kaos of Iberia, an ancient king of Causasian Iberia
• Joey Munoz or Kaos, professional wrestler
• Kenny Stasiowski or Kaos, professional wrestler
• Wych Kaosayananda or Kaos, Thai film director

KAoS is a policy and domain services framework created by the Florida Institute for Human and Machine Cognition. It uses W3C’s Web Ontology Language (OWL) standard for policy representation and reasoning, and a software guard technology for efficient enforcement of a compiled version of its policies. It has been used in a variety of government-sponsored projects for distributed host and network management and for the coordination of human-agent-robot teams, including DARPA's CoABS Grid, Cougaar, and Common Object Request Broker Architecture (CORBA) models.