Gertrude of Northeim | |
|---|---|
| Born | c. 1090 |
| Died | after 1154-before 1169 |
| Spouse(s) | Siegfried of Ballenstedt Otto of Salm |
| Issue | Siegfried II of Weimar-Orlamünde Adela of Weimar-Orlamünde William of Weimar-Orlamünde Otto II of Salm Sophia of Rheineck Beatrice of Salm |
| Father | Henry, Margrave of Frisia |
| Mother | Gertrude of Brunswick |
Gertrude of Northeim (also Gertrude of Nordheim) (c. 1090 – after 1154/before 1169), was a German noblewoman and regent.
She was the daughter of Henry, Margrave of Frisia. Gertrude was heiress of Bentheim and Rheineck. She married first Siegfried I of Weimar-Orlamünde and then Otto I, Count of Salm. She was regent of the County of Weimar-Orlamünde during the minority of her son Siegfried II of Weimar-Orlamünde in 1113-1115, and regent of the County of Bentheim on behalf of her daughter Sophia in 1150.