All over the world, Sefanaia (Sefanaia 
) is a very rare masculine first name. The forename Sefanaia is characteristic of Melanesia, particularly Fiji, where it is quite a rare male name.
| VARIANT | COUNTRY |
|---|---|
| Sefanaia | Australia, Fiji, United States, New Zealand, United Kingdom |
| sefanaia sukanaivalu recipient of the Victoria Cross, FJ (b. 1918) |
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sefanaia naivalu Fijian rugby union player, FJ (b. 1992) |
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Malu, Baleisolomone, Waqavakatoga, Wailekaleka, Niutupuivaha, Tongamoa, Tagivakatini, Takavesi, Kaumaitotoya, Silimaibau, Qalilawa, Vosabalavu, Scholte, Qaloewai, Fuakilau, Naceva, Turava, Takelo, Tamani, Lekehe, Leakehe, Daurua, Rayawa, Esera, Tabua, Siolo, Wong, Waqa, Temo, Seru, Talemaiviti, and Vakaloloma