Cognomen Виячев (Виячев 
) , in all the world, is a very rare surname. The surname Виячев is characteristic of Eastern Europe, particularly Bulgaria, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Виячев | Bulgaria |
| андон виячев Bulgarian politician, BG (b. 1868) |
|
|
| димитър виячев BG (b. 1924) |
|
Георги, and Александър