Siegfried I of Ballenstedt | |
|---|---|
.svg) Coat of arms of the Counts of Ballenstedt | |
| Born | c. 1075 |
| Died | 9 March 1113 |
| Noble family | House of Ascania |
| Spouse(s) | Gertrude of Northeim |
| Issue | Siegfried II of Weimar-Orlamünde Adela of Weimar-Orlamünde William of Weimar-Orlamünde |
| Father | Adalbert II of Ballenstedt |
| Mother | Adelaide of Weimar-Orlamünde |
Siegfried I of Ballenstedt (c. 1075 – 9 March 1113), was the son of Adalbert II of Ballenstedt, and a member of the House of Ascania. He was count palatine of the Rhineland (r.1095/7-1113), and count of Weimar-Orlamünde (r.1112-1113).