Cognomen Ota (Ota 
, 大田 
, オタ 
, along with others...) , throughout the world, is a common family name. The last name Ota is habitual in Egypt, where it is quite a rare surname, Slovenia, and Saudi Arabia. In absolute terms, it is commonest in Egypt, India, and Nigeria. Also, Ota is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ota | Czechia, Egypt, Nigeria, India, Brazil |
| 大田 | China |
| オタ | Japan |
| Ота | Armenia, Russia, Kyrgyzstan, Bulgaria, Ukraine |
| โอตะ | Thailand |
Daita, Furuta, Huruta, Moto, Ndoto, Oda, Ohta, Ola, Onoda, Oota, Orida, Orita, Osada, Otton, Otà, Otá, Otâ, Outa, Tada, Òťâ, Ôtâ, Õta, Õtã, Ōta, Ōtā, Őťá, Даита, Ода, Онода, Орида, Орита, Осада, Тада, Фурута, אודה, אוטה, וטא, أودا, اوتا, وتا, ออต๊ะ, ໂຕະ, おおた, ただ, オオタ, 太田, 小田, and Ｏｔａ
| ota gyuichi (b. 1527) |
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| mary "winona" nancy wakantankanwin ota 1838- (b. 1837) |
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| shumin ota Japanese painter (b. 1884) |
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| samuro ota Japanese artist (1884-1969) (b. 1884) |
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| tsugiyoshi ota (b. 1892) |
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keiko ota Brazilian politician, BR (b. 1956) |
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| miye ota judoka (1918-) (b. 1918) |
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yoshitaka ota social anthropologist and academic, CA (b. 1969) |
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| ken ota judoka (1923-2015) (b. 1923) |
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| ignacij ota IT (b. 1931) |
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| alexandru ota politician, RO (b. 1945) |
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aya ota Japanese athlete, JP (b. 1995) |
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| kiyoto ota Japanese artist, MX (b. 1948) |
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| josef ota (b. 1940) |
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| michitaka ota (b. 1942) |
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