Surname Koczor (Koczor 
) , across the world, is a rare last name. The last name Koczor is habitual in Eastern Europe, particularly Hungary, where it is quite a rare surname, Slovakia, where it is a rare surname, and Poland. Measured by absolute frequency, it is commonest in Hungary, Germany, and Poland. Likewise, Koczor is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Koczor | Poland, Hungary, Slovakia, United States, Germany |
| koczor gyula Czechoslovak member of Czechoslovak national parliament and hungary nation politician, HU (b. 1890) |
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| gustav koczor politician, AT (b. 1900) |
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| koczor jános politician, HU (b. 1918) |
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| raphael koczor Polish footballer, DE (b. 1989) |
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