Last name Plenar (Plenar 
) , around the world, is a very rare family name. The family name Plenar is characteristic of Croatia, where it is quite a rare surname, Hungary, where it is a rare surname, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Croatia, Hungary, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Plenar | Germany, Hungary, Croatia, United States, Canada |
| elvira plenar German pianist, DE (b. 1955) |
|