Cognomen Pai (Pai 
, Pie , パイ 
, among others...) , in the world, is a widespread family name. The last name Pai is habitual in Myanmar, where it is quite a common surname, the Dominican Republic, and Cayman Islands (explore the name in all countries). In absolute terms, it is the most numerous in India, Myanmar, and Indonesia. Very seldom, Pai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pai, Pie | Malaysia, Indonesia, India, United States, Myanmar |
| パイ | Japan |
| باي | Iran, Turkey |
Bae, Bai, Bay, Bùi, Padre, Pae, Palea, Palj, Pater, Pay, Paye, Paí, Paî, Paï, Paī, Pei, Poe, Pui, Pài, Pàï, Pái, Páí, Pâi, Pâì, Pâí, Pâî, Pãi, Pãí, Pãî, Pãï, Pãį, Pä, Pôe, Pāi, Pāį, Păi, Păí, Păî, Păī, Păĭ, Pąì, Pải, Бай, Паи, Пай, Паі, Пе, Пэ, Пэй, ביי, پای, पै, পাই, ปาย, ป่าย, ป้าย, ใผ, ใผ่, ไป, ไผ, ไผ่, ไผ้, ไพ, ไพ่, ไภ้, ပဲ, ပဲ့, ပ့ဲ, ပ်ဲ, ប៉ៃ, ពៃ, ペ, 俳, 哌, 布伊, 廹, 徘, 拍, 排, 棑, 派, 湃, 牌, 犤, 猅, 白, 簰, 簲, 蒎, 裴, 裵, 輫, 鎃, 배, and Ｐａi
| pai de cana ES (b. 1300) |
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| pai paulino Brazilian bullfighter, BR (b. 1798) |
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pai amatodya Granman of the Ndyuka, NL (b. 1903) |
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| te rangi pai Te Whanau-a-Apanui and Ngati Porou; singer, composer, NZ (b. 1868) |
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| mukundrao pai Indian cricketer (b. 1883) |
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anna chao pai American geneticist, US (b. 1935) |
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| pai antonio de oxumare (b. 1879) |
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| helen pai American television writer, director, and producer (b. 1901) |
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| pai zé person identified in the Museu da Pessoa collection, BR (b. 1903) |
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| eui hwan pai (b. 1895) |
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| nhô pai Brazilian composer (1912-1988), BR (b. 1912) |
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| pai ko Taiwanese film director (1914-1964) (b. 1914) |
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ajit varadaraj pai American attorney and former FCC chairman in the United States, US (b. 1973) |
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| shih-i pai (b. 1913) |
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| margaret k. pai (b. 1914) |
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