Cognomen Хейкки (Heikki 
, Heiki 
, Хейкки 
) , across the world, is a rare family name. The cognomen Хейкки is habitual in Finland, where it is quite a rare surname, Sweden, and Hungary, where it is a rare surname. Not in comparison with a country's population, it is commonest in Finland, Sweden, and Spain. More frequently, Хейкки is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Heikki | Sweden, Estonia, United States, Namibia, Finland |
| Heiki | Sweden, Taiwan, Estonia, United States, Finland |
| Хейкки | Russia |