Adelaide of Ballenstedt | |
|---|---|
| Born | c. 1100 |
| Died | after 1139 |
| Noble family | House of Ascania |
| Spouse(s) | Henry IV, Count of Stade Werner, Count of Osterburg |
| Issue | Albert of Osterburg |
| Father | Otto of Ballenstedt |
| Mother | Eilika of Saxony |
Adelaide of Ballenstedt (c. 1100 - after 1139) was the daughter of Otto of Ballenstedt and a member of the House of Ascania. She married, successively, Henry IV, Count of Stade, and Werner, Count of Osterburg.