Last name Katoa (Katoa 
) , across the world, is a rare surname. The last name Katoa is characteristic of New Zealand, where it is a rare surname, Australia, and Tanzania. In absolute terms, it is commonest in the United States, Tanzania, and Australia. Much less frequently, Katoa is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Katoa | Australia, Tanzania, New Zealand, United States, Syria |
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sione katoa Tongan rugby league footballer, NZ (b. 1995) |
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sione katoa New Zealand rugby league footballer, NZ (b. 1997) |
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| jimmy katoa Cook Islands footballer, NZ (b. 1980) |
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| anaseini katoa |
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| takilele katoa New Zealand rugby union player, NZ (b. 1991) |
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| tui katoa New Zealand rugby league player, NZ (b. 1999) |
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| eliesa katoa Tongan rugby league footballer, TO |
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| isaiya katoa Tonga international rugby league footballer |
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Mr, Lacc, Lele, Leka, Lusi, Lynn, Jane, John, Tair, Tahi, Tiri, Nina, Eita, Hema, Vaka, Vili, Fred, Fotu, Will, West, Marie, Malia, Latu, Maire, Lata, Gary, Lu, Mel, Sam, Ana, Lia, Joe, Tui, Eli, Fua, Una, Mary, Mele, Siti, Sera, Anna, Boaz, Keta, Kris, Paul, Risa, Dina, Gaby, and Maata