Surname Vailahi (Vailahi 
) , in the world, is a very rare cognomen. The cognomen Vailahi is characteristic of New Zealand, where it is a rare surname, Australia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Vailahi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vailahi | New Zealand, Canada, United States, Australia |
|
sione vailahi Tongan professional wrestler, TO (b. 1958) |
|