Family name Chaeffer (Chaeffer 
) , throughout the world, is a very rare surname. The surname Chaeffer is habitual in Denmark, where it is a very rare surname, Brazil, where it is an extremely rare surname, and the United States. Much less frequently, Chaeffer is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaeffer | Denmark, Brazil, United States |