Cognomen Martynau (Martynau 
) , worldwide, is a very rare last name. The cognomen Martynau is habitual in Czechia, where it is a rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Martynau | Czechia, United States |
| yury martynau Belarusian volleyball player (b. 1991) |
|