Surname Lygach (Lygach 
, Лыгач 
) , globally, is a rare cognomen. The surname Lygach is characteristic of Belarus, where it is quite a rare surname, Estonia, where it is a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Lygach | Estonia, Belarus |
| Лыгач | Russia, Belarus |