Across the world, Karl-Johannes (Karl-Johannes 
) is a rare boy's first name. The forename Karl-Johannes is characteristic of Western Europe, particularly Germany, where it is a rare male name. Parts of the name also exists independently as a first name Karl, and a first name Johannes.
| VARIANT | COUNTRY |
|---|---|
| Karl-Johannes | South Africa, Germany |
| karl-johannes vogt (b. 1919) |
|