Worldwide, Кусан (Kusan 
, Кусан 
, Kousan 
) is quite a rare dominantly male, but uncommonly girly given name. The first name Кусан is habitual in Kazakhstan, where it is a rare predominantly masculine, but very infrequently girly name, India, where it is a rare dominantly boy's, but infrequently girly name, and Kyrgyzstan, where it is a rare male name. In absolute terms, it is the most numerous in India, Kazakhstan, and Nigeria. Very seldom, Кусан is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kusan | Malaysia, India, Indonesia, Japan, Turkey |
| Кусан | Kazakhstan, Ukraine, Russia, Kyrgyzstan |
| Kousan | United States, India |