Surname Hyökki (Hyökki 
) , all over the world, is a very rare cognomen. The family name Hyökki is habitual in Northern Europe, particularly Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Hyökki | Finland |
| matti hyökki Finnish choral conductor, doctor of music and professor emeritus, FI (b. 1946) |
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| saima hyökki Finnish vocalist, composer and arranger, FI (b. 1981) |
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| paavo hyökki Finnish choral conductor, FI (b. 1981) |
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| sirpa hyökki FI |
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