Surname Kooistra-Sikkema (Kooistra-Sikkema 
) , in all the world, is an extremely rare family name. The last name Kooistra-Sikkema is characteristic of Western Europe, particularly Netherlands, where it is a very rare surname. Parts of the name also exists independently as a last name Kooistra, and a last name Sikkema.
| VARIANT | COUNTRY |
|---|---|
| Kooistra-Sikkema | Netherlands |