Cognomen Tornkvist (Tornkvist 
) , in all the world, is a rare family name. The cognomen Tornkvist is habitual in Greenland, where it is quite a common surname, Sweden, where it is quite a rare surname, and Finland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tornkvist | Sweden, China, Finland, United States, Greenland |
| karin tornkvist SE (b. 1958) |
|