Cognomen Johnson-Tannan (Johnson-Tannan 
) , in all the world, is an extremely rare surname. The surname Johnson-Tannan is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Johnson, and a last name Tannan.
| VARIANT | COUNTRY |
|---|---|
| Johnson-Tannan | United States |