| Legiamayo | |
| River | |
| Name origin: Quechua | |
| Country | Peru |
|---|---|
| Region | Ancash Region |
| Mouth | Santa River |
Legiamayo or Lejiamayu (possibly from Quechua lliklla a rectangular shoulder cloth, mayu river) is a river in Peru located in the Ancash Region, Carhuaz Province, Marcará District. It originates in the Cordillera Blanca west of mount Copa, near Lake Lejiacocha. It is a tributary of Marcará River, which in turn is tributary of Santa River.