Q'umirqucha or Q'umir Qucha (Quechua q'umir green, qucha lake, "green lake", hispanicized spelling Jomercocha) is a lake in Peru located in the Cusco Region, Quispicanchi Province, Marcapata District. It is situated at a height of about , about 0.54 km long and 0.36 km at its widest point. Q'umirqucha lies between the mountains Paqu Ananta and Ch'akiriyuq of the Willkanuta mountain range, north of the village Yanaq Qusqu K'uchu.