| Aliyar River | |
| Pushpin Map: | India |
| Pushpin Map Caption: | Location of mouth |
| Mouth Coordinates: | 10.6167°N 133°W |
| Waterbodies: | Aliyar Reservoir, Upper Aliyar Reservoir |
Aliyar is one of the tributaries of the river Kannadipuzha. Kannadipuzha is one of the main tributaries of the river Bharathapuzha, the second-longest river in Kerala, south India. Its source is the aliyar reserve forest in Aliyar near Pollachi in Tamil Nadu