Cognomen 高兰 (高兰 
, Gollan 
) , globally, is quite a rare last name. The cognomen 高兰 is characteristic of Australia, where it is quite a rare surname, New Zealand, and Germany. Not in comparison with a country's population, this name is the most popular in Germany, Australia, and China. Also, 高兰 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 高兰 | China |
| Gollan | Germany, China, Australia, United States, Democratic Republic of the Congo |