Surname Čelko (Čelko 
) , all over the world, is a rare last name. The cognomen Čelko is habitual in Slovakia, where it is quite a rare surname, Croatia, where it is a rare surname, and Czechia.
| štefan čelko SK (b. 1773) |
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| ignác čelko SK (b. 1814) |
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| jaroslav čelko SK (b. 1923) |
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| vojtěch čelko Slovak historian, SK (b. 1946) |
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| alexander martin čelko SK (b. 1950) |
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| ladislav čelko researcher |
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| alexander m čelko researcher (ORCID 0000-0002-9031-055X) |
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| ladislav čelko CZ (b. 1980) |
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