Family name Γιαννάκης (Yiannakis 
, Giannakis , Yannakis 
) , all over the world, is quite a common surname. The cognomen Γιαννάκης is habitual in Greece, where it is quite a common surname, Cyprus, and Malawi, where it is quite a rare surname. In absolute terms, it is the most numerous in Greece, Malawi, and Australia. Very seldom, Γιαννάκης is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giannakis, Yiannakis | Australia, Greece, Cyprus, United States, Malawi |
| Yannakis | Australia, Germany, Greece, United States, United Kingdom |
| Γιαννάκης | Greece |
|
γιαννάκης σουλτάνης GR (b. 1800) |
|
| γιαννάκης γκρίτζαλης Greek rebel chief during the Greek War of Independence, GR (b. 1791) |
|
|
| γιαννάκης κουτρούκης GR (b. 1785) |
|
|
| γιαννάκης γιολδάσης politician, GR (b. 1800) |
|
|
| γιαννάκης βύρας GR (b. 1800) |
|
|
| γιαννάκης καπούτσης GR (b. 1800) |
|
|
| γιαννάκης γιουρούκης GR (b. 1800) |
|
|
|
γιαννάκης ομήρου Cypriot politician, CY (b. 1951) |
|
|
παναγιώτης γιαννάκης Greek professional basketball player and coach, GR (b. 1959) |
|
| γιαννάκης αγαπίου Cypriot politician, CY (b. 1932) |
|
|
| σωτήρης γιαννάκης Cypriot politician, CY (b. 1932) |
|
|
| γιαννάκης μάτσης Cypriot politician, CY (b. 1933) |
|
|
| γιαννάκης σκορδής Cypriot mayor, CY (b. 1949) |
|
|
| γιαννάκης θωμά Cypriot politician, CY (b. 1956) |
|
|
| γεώργιος β. γιαννάκης Greek–American computer scientist, US (b. 1958) |
|