Throughout the world, Kaltner-Bayer (Kaltner-Bayer 
) is an extremely rare unknown gender first name. Predominantly, Kaltner-Bayer is the last name as well as the forename. Parts of the name also exists independently as a last name Kaltner, and a last name Bayer.
| VARIANT | COUNTRY |
|---|---|
| Kaltner-Bayer | Germany |