Cognomen Giago (Giago 
, Гяго 
) , around the globe, is a very rare last name. The cognomen Giago is habitual in Russia, where it is a very rare surname, Italy, and the United States, where it is an extremely rare surname. Very seldom, Giago is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giago | Philippines, Brazil, Italy, United States, Argentina |
| Гяго | Russia, Ukraine |
| tim giago American Oglala Lakota journalist, US (b. 1934) |
|