Last name Формагин (Формагин 
, Formagin 
) , in all the world, is a very rare cognomen. The surname Формагин is habitual in Brazil, where it is a very rare surname, Russia, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Формагин | Russia |
| Formagin | Brazil, Canada |