Surname Vyaches (Вячес 
, Vyaches 
) , throughout the world, is an extremely rare last name. The surname Vyaches is habitual in Eastern Europe, particularly Russia, where it is an extremely rare surname. More prevalently, Vyaches is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Вячес | Ukraine, Russia |
| Vyaches | United States |