Cognomen Pesu (Pesu 
, Песу ) , globally, is a rare surname. The last name Pesu is characteristic of Finland, where it is quite a rare surname, Estonia, where it is a rare surname, and Romania. In absolute terms, the name is most common in Finland, Nigeria, and Russia. Likewise, Pesu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pesu | Finland, Romania, Russia, India, Nigeria |
| Песу | Russia |
| daniel johannes pesu Finnish painter (1891-1956), FI (b. 1891) |
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| raino pesu orienteer, FI (b. 1972) |
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| mervi pesu Finnish ski- and mountain bike orienteer, FI (b. 1973) |
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| laura pesu researcher |
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| marko pesu researcher ORCID ID = 0000-0002-7541-3921 |
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| mervi pesu (b. 1973) |
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| antero pesu FI |
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| sari pesu FI |
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| keijo pesu FI |
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| simo pesu |
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| ville pesu Finnish pesäpallo player, FI (b. 1995) |
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