Surname Ngatai (Ngatai 
) , all around the world, is a rare cognomen. The cognomen Ngatai is habitual in New Zealand, where it is quite a rare surname, Australia, where it is a rare surname, and the United Kingdom, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in New Zealand, Australia, and the United States. Very seldom, Ngatai is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ngatai | United Kingdom, Australia, United States, India, New Zealand |
| kihi ngatai New Zealand Māori leader, NZ (b. 1930) |
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| ngatai taepa New Zealand painter, NZ (b. 1975) |
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| clowdy ngatai New Zealand weaver (1976— ), NZ (b. 1976) |
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| melodie ngatai New Zealand rugby union player, NZ (b. 1976) |
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| mel ngatai rugby player (b. 1979) |
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| wiremu nera ngatai ?–? Ngati Ruanui missionary, mediator |
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| charlie ngatai New Zealand rugby union player, NZ (b. 1990) |
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| jordan ngatai New Zealand basketball player, NZ (b. 1993) |
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Mr, Riki, Deon, Dave, Dion, Gary, Jake, Jade, Josh, John, Tori, Trae, Tina, Tira, Turi, Nari, Echo, Waru, Will, Maria, Maata, Molly, Rose, Moana, Pera, Kihi, Ms, Ann, Ada, Kim, Ray, Don, Joe, Ted, Nia, Eru, Ena, Mary, Moko, Mike, Sean, Alex, Anne, Karl, Kaya, Khan, Kirk, Paul, and Sarah