Family name Planý (Planý 
) , throughout the world, is a very rare cognomen. The surname Planý is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Planý | Czechia |
| petr planý (b. 1952) |
|
|
| václav planý (b. 1953) |
|