Cognomen Namoa (Namoa 
) , in all the world, is a very rare surname. The family name Namoa is characteristic of Mauritius, where it is quite a rare surname, New Zealand, where it is a rare surname, and Australia. Not in comparison with a country's population, this name is the most popular in Australia, Mauritius, and the United States. Also, Namoa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Namoa | Australia, New Zealand, United States, Malaysia, Mauritius |
| hahano–ki–malaʻe-kula–ʻa sione ngū namoa Tongan politician (1936-2005), TO (b. 1936) |
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| ʻelisiva fusipala taukiʻonetuku namoa Tongan Royal (1949-2014), TO (b. 1949) |
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