Family name Ειρηναίος (Ειρηναίος 
) , around the globe, is an extremely rare surname. Much more prevalently, Ειρηναίος is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ειρηναίος | Greece |
|
αρχιεπίσκοπος κρήτης ειρηναίος Greek priest, GR (b. 1933) |
|
| επίσκοπος ειρηναίος CY (b. 1924) |
|
|
| μητροπολίτης ειρηναίος GR (b. 1934) |
|