Cognomen Deddo (Deddo 
) , worldwide, is a rare surname. The cognomen Deddo is habitual in Myanmar, where it is a very rare surname, the United States, and Germany, where it is an extremely rare surname. Also, Deddo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Deddo | Spain, Myanmar, Indonesia, United States, Germany |
| gary w. deddo (b. 1951) |
|