Adalbert Atto | |
|---|---|
 | |
| Successor | Tedald |
| Died | 13 February 988 |
| Noble family | House of Canossa |
| Spouse(s) | Hildegard (of the Supponid family) |
| Father | Sigifred of Lucca |
Adalbert Atto (or Adalberto Azzo) (died 13 February 988) was the first Count of Canossa and founder of that noble house which eventually was to play a determinant role in the political settling of Regnum Italicum and the Investiture Controversy in the eleventh and twelfth centuries.