| Rivière Monsieur | |
| Pushpin Map: | Martinique |
| Pushpin Map Caption: | Location of mouth |
| Mouth: | Caribbean Sea |
| Subdivision Type1: | Country |
| Subdivision Name1: | France |
| Subdivision Type2: | Region |
| Subdivision Name2: | Martinique |
| Length: | 16.9km (10.5miles) |
The Rivière Monsieur is a river of Martinique. It flows into the Caribbean Sea in Fort-de-France. It is 16.9km (10.5miles) long.