Cognomen Tuau (Tuau 
) , across the world, is a rare last name. The cognomen Tuau is habitual in New Zealand, where it is a rare surname, Malaysia, and France, where it is a very rare surname. Much less frequently, Tuau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tuau | Malaysia, Australia, India, France, New Zealand |
| tuau lapua lapua Tuvaluan weightlifter, TV (b. 1991) |
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