Family name Steo (Steo 
) , around the world, is a rare surname. The cognomen Steo is characteristic of the United States, where it is a very rare surname, Italy, and Canada, where it is an extremely rare surname. Also, Steo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Steo | Canada, United States, Italy, India, Ireland |