Cognomen Lin-Ao (Lin-Ao 
) , worldwide, is a very rare last name. The last name Lin-Ao is characteristic of Philippines, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Lin-Ao is the forename as well as the last name. Parts of the name also exists independently as a last name Lin, and a last name Ao.
| VARIANT | COUNTRY |
|---|---|
| Lin-Ao | United States, Philippines |