Iscailarjanco is a 5,415-metre-high (17,766 ft) mountain in the Andes of southern Peru It is located in the Puno Region, El Collao Province, Santa Rosa District, and in the Tacna Region, Candarave Province, Candarave District. It is southwest of Loriscota and southeast of Vizcacha Lake. Iscailarjanco lies northeast of Cancave, southwest of Pantiuso and south of Larjanco.