Last name Tjørnehøj (Tjørnehøj 
) , in all the world, is a very rare family name. The surname Tjørnehøj is habitual in Northern Europe, particularly Denmark, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tjørnehøj | Denmark |
| henning tjørnehøj Danish politician, DK (b. 1937) |
|