Cognomen Efferson (Efferson 
) , all around the world, is a rare family name. The family name Efferson is habitual in the United States, where it is a rare surname, Canada, where it is an extremely rare surname, and Venezuela. In absolute terms, it is commonest in the United States, China, and Canada. Much less frequently, Efferson is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Efferson | China, Brazil, Philippines, United States, Peru |
| j. norman efferson (b. 1912) |
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| clay l efferson researcher |
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| ajon efferson college basketball player (2015–2015) Cal State Northridge |
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| charles efferson researcher |
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