Llikllaqucha (Quechua lliklla a rectangular shoulder cloth, qucha lake, hispanicized spelling Lejíacocha) is a lake in the Cordillera Blanca in the Andes of Peru. It is located in the Ancash Region, Carhuaz Province, Marcará District. Llikllaqucha lies south-east of the mountain Wallqan, south-west of the mountain Qupa and west of the mountain Lliklla.
The river Llikllamayu originates near the lake. It is a right tributary of the Santa River. The confluence is near Marcará.