List of quadrangles on Io

Io has been divided into 15 quadrangles.^[1]

Name	Number	Latitude range	Longitude range	Namesake	Features
	Ji1	65.5°–90° N	all
Ruwa Patera	Ji2	21.5°–65.5° N	0°–90° W	Ruwa Patera
	Ji3	21.5°–65.5° N	90°–180° W		Shango Patera, Amirani, Thor, Zamama
	Ji4	21.5°–65.5° N	180°–270° W		Thomagata Patera
	Ji5	21.5°–65.5° N	270°–360° W		Amaterasu Patera, Fuchi Patera, Kinich Ahau Patera, Manua Patera, Dazhbog Patera, Surt
	Ji6	21.5° N – 21.5° S	0°–72° W		Kanehekili Fluctus
	Ji7	21.5° N – 21.5° S	72°–144° W		Chaac-Camaxtli region, Monan Patera, Tawhaki Vallis, Ah Peku Patera, Gish Bar Patera, Maui Patera, Tawhaki Patera, Tupan Patera
	Ji8	21.5° N – 21.5° S	144°–216° W		Chaac-Camaxtli region, Prometheus
	Ji9	21.5°N – 21.5° S	216°–288° W		Asha Patera, Kami-Nari Patera, Reiden Patera, Pillan Patera, Pele
	Ji10	21.5° N – 21.5° S	288°–360° W		Loki Patera
	Ji11	21.5°–65.5° S	0°–90° W		Masubi
	Ji12	21.5°–65.5° S	90°–180° W
	Ji13	21.5°–65.5° S	180–270° W		Mithra Patera, Pyerun Patera, Svarog Patera, Egypt Mons, Danube Planum
	Ji14	21.5°–65.5° S	270–360° W		Babbar Patera, Viracocha Patera, Euboea Montes, Silpium Mons
	Ji15	65.5°–90° S	all