Throughout the world, Mamertas (Mamertas 
) is a very rare masculine given name. The forename Mamertas is habitual in Northern Europe, particularly Lithuania, where it is quite a rare boy's name.
| VARIANT | COUNTRY |
|---|---|
| Mamertas | Lithuania, United States, Ireland, United Kingdom |
| mamertas gedgaudas (b. 1843) |
|
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| mamertas karbauskas LT (b. 1882) |
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| mamertas indriliūnas Lithuanian writer (1920-1945), LT (b. 1920) |
|
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| mamertas karbauskas LT (b. 1913) |
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| mamertas karklelis Lithuanian actor, LT (b. 1931) |
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Kapka, Vainorius, Krasauskas, Kulakauskas, Statkevi Ius, Nesvarbu, Janickas, Klevickas, Bobrovas, Audickas, Maciukas, Noreika, Turskis, Kiveris, Ercius, Krakys, Kazlauskas, and Statkevičius