Throughout the world, Ansgarius (Ansgarius 
) is a rare boy's first name. The forename Ansgarius is habitual in South-eastern Asia, particularly Indonesia, where it is a very rare masculine name. Much less frequently, Ansgarius is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ansgarius | Sweden, Indonesia, Spain, Malaysia, United States |