Last name Ubah (Ubah 
) , throughout the world, is a common cognomen. The surname Ubah is characteristic of Gambia, where it is quite a rare surname, Nigeria, and Malaysia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Nigeria, Ethiopia, and Malaysia. More frequently, Ubah is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Ubah | Somalia, Ethiopia, Malaysia, Kenya, Nigeria |
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ifeanyi patrick ubah Nigerian business magnate, politician, NG (b. 1971) |
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| rufina ubah Nigerian sprinter, NG (b. 1959) |
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| calister ubah Nigerian sprinter, NG (b. 1973) |
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| john ubah Nigerian governor, NG |
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| rashaad ubah college basketball player (2009–2010) UC-Irvine |
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| obinna c ubah researcher |
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| chinenye ubah Nigerian actress, NG (b. 1997) |
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