Family name Decion (Decion 
) , across the world, is a rare surname. The last name Decion is characteristic of Mexico, where it is a rare surname, Philippines, where it is a very rare surname, and Brazil, where it is an extremely rare surname. Very seldom, Decion is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Decion | Philippines, Brazil, United States, Mexico, United Kingdom |