Family name Rengart (Rengart 
) , in the world, is a very rare cognomen. The last name Rengart is characteristic of Sweden, where it is a rare surname, Belarus, where it is a very rare surname, and Argentina. Much less frequently, Rengart is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rengart | Germany, Sweden, Spain, Belarus, Argentina |