Surname Kirchof (Kirchof 
) , all over the world, is a rare last name. The family name Kirchof is characteristic of Poland, where it is a very rare surname, Germany, and Brazil. Measured by absolute frequency, it is the most numerous in Brazil, the United States, and Poland. Likewise, Kirchof is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kirchof | Germany, Argentina, Brazil, Poland, United States |