Cognomen Peťko (Peťko 
) , around the world, is a rare last name. The surname Peťko is habitual in Eastern Europe, particularly Slovakia, where it is quite a rare surname, and Czechia, where it is a rare surname. Likewise, Peťko is the forename as well as the last name.
| koloman peťko SK (b. 1881) |
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| gabriel peťko SK (b. 1901) |
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| emil peťko SK (b. 1903) |
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| valér peťko (b. 1930) |
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| branislav peťko researcher ORCID ID = 0000-0001-5373-177X (b. 1953) |
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