Last name كوجان (Kogan 
, Cogan 
, كوجان 
) , globally, is a common surname. The last name كوجان is characteristic of Israel, where it is quite a common surname, Ireland, and Japan. In absolute terms, it most frequently occurs in Japan, the United States, and Israel. Very seldom, كوجان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kogan | Japan, United Kingdom, Australia, United States, Israel |
| Cogan | Indonesia, United Kingdom, Ireland, United States, Israel |
| كوجان | Saudi Arabia, Syria, Morocco, Jordan, Iraq |
| Coogan | United Kingdom, Australia, Ireland, United States, Argentina |