Surname Kostelecky (Kostelecky 
, Kostelecký , Костелецький 
) , worldwide, is quite a rare family name. The cognomen Kostelecky is characteristic of Czechia, where it is quite a rare surname, Austria, and the United States, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Kostelecky | Germany, Czechia, Austria, United States, Canada |
| Kostelecký | Czechia |
| Костелецький | Ukraine |
| josef kostelecky Austrian politician (1914-1997), AT (b. 1914) |
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| alfred kostelecky Austrian priest and theologian, AT (b. 1920) |
|
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| brenda kostelecky researcher |
|
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| matthew kostelecky |
|