| House Order of Fidelity | |
|---|---|
 Star, badge and ribbon of the order | |
| Awarded by the Grand Duchy of Baden | |
| Type | State order |
| Motto | FIDELITAS |
| Sovereign | Prince Bernhard |
| Grades | Knight Grand Cross Knight Commander Knight |
 Ribbon of the order | |
The House Order of Fidelity (‹See Tfd›German: Hausorden der Treue) is a dynastic order of the Margraviate of Baden. It was established by Charles III William, Margrave of Baden-Durlach as a reward for merit and to mark the laying of the foundation stone of his residence at Karlsruhe Palace. As was customary at that time, it was originally named in French as the Ordre de la Fidélité, before later being renamed the Orden der Treue and finally in 1840 the Hausorden der Treue. Its motto was Fidelitas (Latin for "Fidelity"), which is also part of Karlsruhe, Germany's coat of arms.