Surname Koikson (Koikson 
) , in the entire world, is a very rare cognomen. The cognomen Koikson is habitual in Northern Europe, particularly Estonia, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Koikson | Estonia |
|
liisi koikson Estonian singer, EE (b. 1983) |
|
| irja koikson Estonian association football player, EE (b. 1980) |
|
Mr, Ms, Irja, Rasmus, and Laura-Liis