Yanaqucha (Quechua yana black, qucha lake, "black lake", hispanicized spelling Yana Cocha) is a mountain in the Andes of Peru, about high. It is situated on the border of the districts of Marcapata and Camanti in Quispicanchi Province, Cusco Region. It lies northeast of Piki Mach'ay.
The mountain is named after a little lake northeast of it at .