Last name Κακογιάννης (Kakoyannis 
, Κακογιάννης, Cacoyannis 
) , throughout the world, is a very rare cognomen. The cognomen Κακογιάννης is characteristic of Romania, where it is a rare surname, Netherlands, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is commonest in Romania, the United States, and Netherlands. Much less frequently, Κακογιάννης is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kakoyannis | Romania, United States |
| Cacoyannis | Netherlands, United Kingdom, United States |
| θανάσης κακογιάννης Greek politician, GR (b. 1914) |
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| μιχάλης κακογιάννης Greek film and stage director, CY (b. 1922) |
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| κώστας κακογιάννης Cypriot composer, CY (b. 1968) |
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| θανάσης κακογιάννης Greek politician, GR |
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| χρύσανθος κακογιάννης CY |
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