| Bröl | |
| Image Alt: | The Bröl in Hennef, just before it flows into the Sieg |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Mouth Location: | in Hennef |
| Mouth Coordinates: | 50.7822°N 7.3083°W |
| Length: | 45.1km (28miles) |
| Source1 Elevation: | 368m (1,207feet) |
| Mouth Elevation: | 67m (220feet) |
| Basin Size: | 217.2km2 |
The Bröl (also called the Brölbach or the Homburgische Bröl) is a 45.1 km long right tributary of the Sieg in North Rhine-Westphalia, Germany.
The river flows through the districts of Rhein-Sieg-Kreis and Oberbergischer Kreis. The river's source is in the town of Waldbröl at an elevation of 368 meters above sea level. It flows in a southwest direction through the Bergisches Land and past the Homburg Castle. In the town of Ruppichteroth, a small tributary called the Waldbrölbach joins the Bröl. It eventually flows to the town of Hennef where it joins the Sieg at an elevation of 67 meters.