Surname Grumadaite (Grumadaite 
) , in the entire world, is a very rare cognomen. The family name Grumadaite is characteristic of Lithuania, where it is a rare surname, Greece, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Grumadaite | United States, Lithuania, United Kingdom, Greece |