Cognomen Košek (Košek 
) , globally, is a rare surname. The surname Košek is characteristic of Czechia, where it is quite a rare surname, and Croatia, where it is a rare surname.
| VARIANT | COUNTRY |
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| Košek | Czechia, Croatia |
| vojtěch košek (b. 1861) |
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| václav košek Czech politician and union member, CZ (b. 1878) |
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| franjo košek (b. 1872) |
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| jan košek Czech soccer player (1884-1927), CZ (b. 1884) |
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| jaroslav košek CZ (b. 1884) |
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| františek košek (b. 1886) |
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| josef košek holocaust victim, b. 1904-10-23, CZ (b. 1904) |
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| jan košek Czechoslovak league ice hockey player, ice hockey defender and Olympic athlete, CZ (b. 1914) |
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| miroslav košek holocaust victim, b. 1932-03-30, CZ (b. 1932) |
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| pavel košek holocaust victim, b. 1934-05-05, CZ (b. 1934) |
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| miloslav košek (b. 1942) |
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| zdeněk košek CZ (b. 1949) |
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