Family name Sijens (Sijens 
) , globally, is a rare surname. The surname Sijens is habitual in Western Europe, particularly Netherlands, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sijens | Netherlands |
|
doeke sijens NL (b. 1955) |
|
| paul e sijens researcher (ORCID 0000-0003-4184-3736) |
|