Cognomen Peljo (Peljo 
) , throughout the world, is a rare last name. The cognomen Peljo is characteristic of Northern Europe, particularly Estonia, where it is quite a rare surname, Finland, where it is a rare surname, and Lithuania.
| VARIANT | COUNTRY |
|---|---|
| Peljo | Estonia, Latvia, Lithuania, Australia, Finland |
| tõnis peljo Estonian mountaineer, EE (b. 1973) |
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| anu peljo Estonian mountaineer and civil servant, EE (b. 1974) |
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| pekka peljo Finnish physical chemist, FI |
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