Last name Perby (Perby 
) , across the world, is a very rare cognomen. The cognomen Perby is characteristic of Denmark, where it is a rare surname, Sweden, and Honduras, where it is a very rare surname. In absolute terms, this name is the most popular in Denmark, Sweden, and the United States. Much less frequently, Perby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Perby | Sweden, Honduras, United States, Denmark, Peru |