Family name Seják (Seják 
) , across the world, is a very rare cognomen. The family name Seják is habitual in Eastern Europe, particularly Czechia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Seják | Czechia |
| josef seják CZ (b. 1944) |
|
|
| eduard seják (b. 1988) |
|