Surname Гайкан (Gaikan 
, Гайкан 
, Gaykan 
) , throughout the world, is a very rare cognomen. The last name Гайкан is habitual in Turkey, where it is a very rare surname, Philippines, where it is an extremely rare surname, and the United States. More frequently, Гайкан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gaikan | Japan, India, United States |
| Гайкан | Russia |
| Gaykan | Turkey, United States, Philippines |