Last name Кортни (Courtney 
, Courteney 
, Kortni 
) , across the world, is a common surname. The cognomen Кортни is characteristic of Grenada, where it is quite a common surname, Ireland, and New Zealand, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Australia. More frequently, Кортни is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Courtney | United Kingdom, Australia, United States, Canada, Jamaica |
| Courteney | United Kingdom, Australia, United States, Canada, New Zealand |
| Kortni | United Kingdom, Australia, United States, Canada, Venezuela |
| Кортни | Kazakhstan, Russia |