Surname Köykkä (Köykkä 
) , in the entire world, is a rare family name. The last name Köykkä is habitual in Finland, where it is quite a rare surname, New Zealand, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
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| Köykkä | Finland, United States, New Zealand |
| olavi köykkä Finnish association football player, FI (b. 1943) |
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| risto köykkä Finnish poet, FI (b. 1962) |
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| marko köykkä Finnish footballer, FI (b. 1966) |
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| voitto köykkä Finnish volleyball player, FI |
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| miika köykkä researcher |
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| jari köykkä FI |
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| j. köykkä |
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| matias köykkä Race car driver, FI (b. 1994) |
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Anu, Oona, Ulla, Marko, Marjo, Mauri, Mirva, Mikko, Miika, Sanna, Saara, Senni, Antto, Katja, Kirsi, Kimmo, Petri, Pekka, Laura, Lassi, Leena, Jarmo, Outi, Olli, Irja, Ismo, Nea, Esa, Mira, Mika, Sari, Sami, Saku, Anna, Arto, Arja, Jarno, Airi, Kati, Jani, Joel, Juha, Jyri, Tomi, Tero, Timo, Niko, Vesa, Atte, and Jorma