Across the world, Siosifa (Siosifa 
) is a very rare mostly boy's, but infrequently girly first name. The first name Siosifa is characteristic of Northern America, particularly the United States, where it is an extremely rare mostly masculine, but uncommonly feminine name.
| VARIANT | COUNTRY |
|---|---|
| Siosifa | New Zealand, Canada, United States, Australia |
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siosifa tuʻitupou tuʻutafaiva Tongan lawyer and politician |
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siosifa talakai Australian rugby league footballer (b. 1997), NZ (b. 1997) |
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| siosifa moimoi footballer, TO (b. 1994) |
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| siosifa lisala Tongan-born Japanese rugby union player, TO (b. 1994) |
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He, Lavaka, Lolohea, Taiese, Tafuna, Tafisi, Tuavano, Tuavao, Tuifua, Tuuhoko, Vaifoou, Fatani, Fataua, Filipe, Funaki, Lavulavu, Talamai, Talakai, Heimuli, Hingano, Militoni, Aholelei, Lauese, Pulini, Pekipaki, Setoki, Nai, Vea, Mahe, Maka, Mafi, Koka, Palu, Pole, Latu, Tupa, Tuitavake, Fili, Ahoia, Koloa, Leota, Tonga, Tupou, Tuita, Tu'Avao, Naeata, Finau, Malolo, Fotu, and Taumoepeau