Cognomen Effiom (Effiom 
) , all over the world, is a common last name. The surname Effiom is habitual in Nigeria, where it is quite a rare surname, Cameroon, where it is a rare surname, and the United Kingdom, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Nigeria, Cameroon, and the United States. Likewise, Effiom is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Effiom | United Kingdom, Cameroon, United States, Nigeria, Indonesia |
| ntiero effiom Nigerian association football player (1946-2014), NG (b. 1946) |
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| olajumoke a effiom researcher |
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| effiom effiom researcher |
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| mabel effiom Nigerian association football player, NG (b. 1995) |
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| maxwell effiom Nigerian footballer (b. 1999) |
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