Surname Чао (Chao 
, Ciao 
, Чао 
) , throughout the world, is a widespread family name. The surname Чао is characteristic of Macao, where it is a widespread surname, Cayman Islands, where it is quite a common surname, and Taiwan (explore the name in all countries). Not in comparison with a country's population, the name is most common in China, Taiwan, and the United States. Likewise, Чао is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chao | China, Taiwan, Mozambique, United States, Macao |
| Ciao | Malaysia, China, United States, Indonesia, Italy |
| Чао | Kazakhstan, Armenia, Kyrgyzstan, Russia, Ukraine |
| Tchao | China, France, Cameroon, Canada, United States |