Family name Johnmac (Johnmac 
) , in all the world, is an extremely rare last name. The last name Johnmac is habitual in Sub-Saharan Africa, particularly Nigeria, where it is an extremely rare surname. Likewise, Johnmac is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Johnmac | Nigeria, United States, Canada |