Family name Oto (Oto 
, Отто 
, オト , among others...) , in the world, is a common last name. The surname Oto is habitual in Slovenia, where it is quite a rare surname, Kazakhstan, and Croatia. In absolute terms, the name is most common in Nigeria, Indonesia, and Turkey. Also, Oto is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oto | Japan, Turkey, Nigeria, Indonesia, Brazil |
| Отто | Kazakhstan, Estonia, Ukraine, Belarus, Russia |
| オト | Japan |
| Ото | Serbia, Kyrgyzstan, Ukraine, Russia, Bulgaria |
| אוטו | Israel |
Alto, Altus, Atis, Bitoh, Bitou, Kido, Negi, Oddo, Odo, Odoh, Odou, Oe, Ofuji, Ohdo, Ohe, Ohko, Ohto, Ohtoh, Ohtou, Ohuji, Oko, Oodo, Ooko, Ooto, Otar, Otero, Othon, Otoh, Oton, Otou, Otto, Ottó, Otó, Otón, Otｏ, Udo, Óto, Ôto, Όθων, Одо, Ота, Отон, Оттон, Удо, וטו, أتو, أوتو, أودو, অটো, きど, ねぎ, ウド, オトオ, オード, 奥多, 奧圖, 小渡, and 尾藤
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josé oto royo Spanish singer (1906-1961), ES (b. 1906) |
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| manuel gil de oto Spanish author, ES (b. 1870) |
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| lopeti oto Tongan-Japanese rugby union footballer (1971-), TO (b. 1971) |
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| michiei oto Japanese molecular biologist |
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| sibel oto researcher |
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| gökhan oto researcher (ORCID 0000-0002-8492-4846) |
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| nataniela oto Tongan-Japanese rugby union footballer, TO (b. 1980) |
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| jun oto researcher |
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| cagdas oto researcher (ORCID 0000-0002-2727-3768) |
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| jeanette oto Peerage person ID=309369 |
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| enrico di oto researcher |
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| yumeki oto researcher (ORCID 0000-0002-9739-5912) |
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| aytekin oto researcher (ORCID 0000-0003-4325-2489) |
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| berna oto researcher (ORCID 0000-0003-4565-1790) |
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| yuji oto researcher |
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