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All over the world, О (O
, Oh
, О
, and others...) is a common epicene first name. The forename О is characteristic of Singapore, where it is quite a rare gender-neutral name, Indonesia, and the United Kingdom. Measured by absolute frequency, it most frequently occurs in Indonesia, China, and India. Also, О is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| O, Oh | Canada, Japan, Indonesia, China, Venezuela |
| О | Kazakhstan, Russia, China, Azerbaijan, Ukraine |
| Ō | China, Myanmar |
| Sonfa | India, United States, Thailand |
О is also a popular name for the fictitious and mythical characters: Wendy O. Koopa , the fictional character from the Mario franchise, Super Mario Maker 2; O Menino Triste ; Oh , the fictional character; O Analista de Bagé and O Gralha , the Brazilian comics character, and in many other works.