Last name Obao (Obao 
) , in the world, is a rare surname. The cognomen Obao is characteristic of the Democratic Republic of the Congo, where it is a rare surname, Kenya, and Philippines, where it is a very rare surname. Very seldom, Obao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Obao | Democratic Republic of the Congo, China, Thailand, Philippines, Kenya |