Family name Ansgarius (Ansgarius 
) , throughout the world, is a very rare cognomen. The family name Ansgarius is characteristic of Sweden, where it is a rare surname, Malaysia, where it is an extremely rare surname, and the United States. More prevalently, Ansgarius is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ansgarius | Sweden, Indonesia, Spain, Malaysia, United States |