| Aid | |
| Pushpin Map: | Germany |
| Pushpin Map Caption: | Location of mouth |
| Mouth Coordinates: | 48.6816°N 8.9075°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Baden-Württemberg |
| Length: | 10.8km (06.7miles) |
The Aid (in its upper course: Irm) is a river in Baden-Württemberg, Germany. It is a left tributary of the Würm in Aidlingen.