CHAOS can be acronym or proper name for: C.H.A.O.S., "Create Havoc Around Our System", used by the Association of Flight Attendants for intermittent work stoppages or strikes CHAOS (Linux distribution), a Linux distribution designed for ad-hoc computer...

The Sacred Chao, a symbol of the Discordian religion

Chao, creatures in the Sonic the Hedgehog universe by SEGA.

Chaos, a creature of liquid chaos energy, also in the Sonic the Hedgehog universe. It was also in the master emerald.(also in the Sonic the Hedgehog universe)

Manu Chao, a French Latin singer of Spanish origin

Cháo, a Vietnamese porridge made from rice and water

Chao Phraya River, a major river in Thailand

Elaine Chao, United States Secretary of Labor and the first Asian American female appointed to the United States Cabinet

Ciao, an Italian greeting

Yuen Ren Chao, a Chinese linguist

Rosalind Chao, Chinese American actress born in Anaheim, California

Chao, the Cambodian name for Tapai, fermented food made from rice

Chao, an alternative spelling of the Chinese Zhao (surname)

Ciao (magazine), a manga magazine published in Japan by Shogakukan

Chǎo (炒), a Chinese stir frying technique

The Chao method, a way of indicating Chinese tones devised by Yuen Ren Chao.