Family name Arianus (Ariano 
, Arianus 
) , across the world, is quite a rare surname. The last name Arianus is characteristic of Panama, where it is quite a rare surname, Italy, and Honduras. Not in comparison with a country's population, it most frequently occurs in Italy, Indonesia, and the United States. Also, Arianus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ariano | Panama, Italy, Brazil, Indonesia, United States |
| Arianus | Canada, United States, Indonesia |
| candidus arianus Christian author of the 4th century (b. 350) |
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| saint arianus governor of Ansena |
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| julianus arianus |
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