# List of volcanic features on Io

This is a list of named volcanic surface features on Jupiter's moon Io. These names have been approved for use by the International Astronomical Union. The features listed below represent a subset of the total known volcanic features on Io's surface with the majority currently not having an officially approved name.
The names of volcanic features on Io use a combination of a name derived from mythological figures from around the world related to the Sun, fire, volcanoes, thunder, or smithing, places from the Greek mythological story of Io, Dante's Inferno, or from the name of a nearby feature on Io's surface and an approved descriptive term. The descriptive term used is based on the type of feature named and how it was first discovered. Volcanoes that were first observed as an active feature from observations of a volcanic plume fit under the category of "Eruptive Center" and do not use a descriptive term, though portions of these features may have also received names that do use a descriptive term, like Prometheus Patera or Masubi Fluctus. Lava flows use the descriptive term fluctus or the plural fluctūs, e.g. Acala Fluctus. Volcanic depressions use the term patera or the plural paterae, e.g. Ah Peku Patera. The term has also become the generic term for referring to these structures. Small shield volcanoes use the term tholus or the plural tholi, e.g. Inachus Tholus. Finally, channels carved by volcanic lava flows through thermal erosion use the term vallis or the plural valles.
See also the list of mountains on Io and the list of regions on Io.

## Eruptive centers

Eruptive centers on Io are locations typically where major volcanic activity was observed and characterized before the volcanic landform was. Coordinate, diameter, and name source come from the IAU's Solar System Nomenclature Website. All of these features have been observed as active volcanoes on Io.
| Volcano | Named after | Coordinates |
| Amirani | Amirani (Georgian) | 24°28′N 114°41′W﻿ / ﻿24.46°N 114.68°W﻿ / 24.46; -114.68﻿ (Amirani) |
| Kanehekili | Kāne Milohai (Hawaiian) | 18°13′S 33°37′W﻿ / ﻿18.21°S 33.61°W﻿ / -18.21; -33.61﻿ (Amirani) |
| Loki | Loki (Norse) | 18°13′N 302°34′W﻿ / ﻿18.22°N 302.56°W﻿ / 18.22; -302.56﻿ (Loki) |
| Marduk | Marduk (Babylonian) | 29°17′S 209°44′W﻿ / ﻿29.29°S 209.74°W﻿ / -29.29; -209.74﻿ (Marduk) |
| Masubi | Ho-Masubi (Japanese) | 49°36′S 56°11′W﻿ / ﻿49.6°S 56.18°W﻿ / -49.6; -56.18﻿ (Masubi) |
| Maui | Māui (Hawaiian) | 19°32′N 122°19′W﻿ / ﻿19.53°N 122.31°W﻿ / 19.53; -122.31﻿ (Maui) |
| Pele | Pele (Hawaiian) | 18°43′S 255°17′W﻿ / ﻿18.71°S 255.28°W﻿ / -18.71; -255.28﻿ (Pele) |
| Prometheus | Prometheus (Greek) | 1°31′S 153°56′W﻿ / ﻿1.52°S 153.94°W﻿ / -1.52; -153.94﻿ (Prometheus) |
| Surt | Surtr (Icelandic) | 45°13′N 336°29′W﻿ / ﻿45.21°N 336.49°W﻿ / 45.21; -336.49﻿ (Surt) |
| Tonatiuh | Tonatiuh (Aztec) | 52°N 77°W﻿ / ﻿52°N 77°W﻿ / 52; -77﻿ (Tonatiuh) |
| Thor | Thor (Norse) | 39°09′N 133°08′W﻿ / ﻿39.15°N 133.14°W﻿ / 39.15; -133.14﻿ (Thor) |
| Volund | Völundr (Norse) | 28°37′N 172°30′W﻿ / ﻿28.62°N 172.5°W﻿ / 28.62; -172.5﻿ (Volund) |
| Xihe | Xihe (Chinese) | 55°S 290°W﻿ / ﻿55°S 290°W﻿ / -55; -290﻿ (Xihe) |
| Zamama | Zamama (Sumerian) | 18°26′N 172°35′W﻿ / ﻿18.43°N 172.59°W﻿ / 18.43; -172.59﻿ (Zamama) |

## Paterae

The following table lists named volcanic depressions or paterae on Io. Coordinate, diameter, and name source come from the IAU's Solar System Nomenclature Website. Notes on whether the patera has been observed as an active volcano by either ground-based astronomers, the Hubble Space Telescope, or the various spacecraft that have encountered the Jupiter system come from the book, Volcanism on Io, unless otherwise noted.
In 2006, the use of the term catena /kəˈtiːnə/, for Ionian volcanoes with multiple depressions, was discontinued in favor of the plural paterae /ˈpætərə/. These features are Tvashtar Paterae, Reshet Paterae, and Mazda Paterae.
| Patera | Named after | Coordinates | Diameter (km) | Activity Observed |
| Ababinili Patera | Ababinili (Chickasaw) | 12°47′N 142°10′W﻿ / ﻿12.79°N 142.16°W﻿ / 12.79; -142.16﻿ (Ababinili Patera) | 105.0 | No |
| Agni Patera | Agni (Hindu and others) | 40°48′S 333°03′W﻿ / ﻿40.8°S 333.05°W﻿ / -40.8; -333.05﻿ (Agni Patera) | 19.7 | No |
| Ah Peku Patera | Ah Peku (Mayan) | 10°20′N 107°02′W﻿ / ﻿10.34°N 107.04°W﻿ / 10.34; -107.04﻿ (Ah Peku Patera) | 84.0 | Yes |
| Aidne Patera | Aidne (Irish) | 34°24′S 177°05′W﻿ / ﻿34.4°S 177.09°W﻿ / -34.4; -177.09﻿ (Aidne Patera) | 30.26 | Yes |
| Altjirra Patera | Altjira (Australian Aboriginal) | 1°47′S 108°58′W﻿ / ﻿1.78°S 108.97°W﻿ / -1.78; -108.97﻿ (Altjirra Patera) | 52.55 | Yes |
| Amaterasu Patera | Amaterasu (Japanese) | 38°08′N 306°32′W﻿ / ﻿38.13°N 306.53°W﻿ / 38.13; -306.53﻿ (Amaterasu Patera) | 93.1 | Yes |
| Angpetu Patera | Angpetu (Dakota) | 21°09′S 8°47′W﻿ / ﻿21.15°S 8.79°W﻿ / -21.15; -8.79﻿ (Angpetu Patera) | 13.68 | No |
| Aramazd Patera | Aramazd (Armenian) | 73°35′S 336°49′W﻿ / ﻿73.58°S 336.81°W﻿ / -73.58; -336.81﻿ (Aramazd Patera) | 68.82 | No |
| Arusha Patera | Arusha (Hindu) | 39°04′S 101°29′W﻿ / ﻿39.06°S 101.48°W﻿ / -39.06; -101.48﻿ (Arusha Patera) | 68.07 | Yes |
| Asha Patera | Asha (Zoroastrian) | 8°50′S 225°41′W﻿ / ﻿8.84°S 225.69°W﻿ / -8.84; -225.69﻿ (Asha Patera) | 108.33 | Yes |
| Asis Patera | Asis (Nandi) | 44°20′N 91°08′W﻿ / ﻿44.33°N 91.14°W﻿ / 44.33; -91.14﻿ (Asis Patera) | 98.00 | Yes |
| Ātar Patera | Atar (Zoroastrian) | 31°06′N 278°35′W﻿ / ﻿31.1°N 278.58°W﻿ / 31.1; -278.58﻿ (Ātar Patera) | 86.41 | Yes |
| Aten Patera | Aten (Egyptian) | 48°32′S 310°01′W﻿ / ﻿48.53°S 310.02°W﻿ / -48.53; -310.02﻿ (Aten Patera) | 43.4 | Yes |
| Babbar Patera | Babbar (Sumerian) | 39°47′S 271°59′W﻿ / ﻿39.79°S 271.98°W﻿ / -39.79; -271.98﻿ (Babbar Patera) | 85.74 | Yes |
| Balder Patera | Balder (Norse) | 11°26′N 156°06′W﻿ / ﻿11.44°N 156.1°W﻿ / 11.44; -156.1﻿ (Balder Patera) | 42.0 | No |
| Belenus Patera | Belenus (Celtic) | 2°54′N 157°43′W﻿ / ﻿2.9°N 157.72°W﻿ / 2.9; -157.72﻿ (Belenus Patera) | 23.01 | No |
| Bochica Patera | Bochica (Muisca) | 61°30′S 18°51′W﻿ / ﻿61.5°S 18.85°W﻿ / -61.5; -18.85﻿ (Bochica Patera) | 52.38 | No |
| Camaxtli Patera | Camaxtli (Aztec) | 15°15′N 136°48′W﻿ / ﻿15.25°N 136.8°W﻿ / 15.25; -136.8﻿ (Camaxtli Patera) | 58.39 | Yes |
| Carancho Patera | Carancho (Bolivian) | 1°26′N 317°12′W﻿ / ﻿1.43°N 317.2°W﻿ / 1.43; -317.2﻿ (Carancho Patera) | 30.04 | No |
| Cataquil Patera | Catequil (Inca) | 23°53′S 16°34′W﻿ / ﻿23.89°S 16.57°W﻿ / -23.89; -16.57﻿ (Cataquil Patera) | 133.95 | No |
| Catha Patera | Cautha (Etruscan) | 53°46′S 101°35′W﻿ / ﻿53.76°S 101.58°W﻿ / -53.76; -101.58﻿ (Catha Patera) | 68.59 | Yes |
| Chaac Patera | Chaac (Mayan) | 11°53′N 157°26′W﻿ / ﻿11.88°N 157.44°W﻿ / 11.88; -157.44﻿ (Chaac Patera) | 95.88 | Yes |
| Chors Patera | Chors (Slavic) | 68°28′N 249°51′W﻿ / ﻿68.47°N 249.85°W﻿ / 68.47; -249.85﻿ (Chors Patera) | 64.97 | Yes |
| Creidne Patera | Creidhne (Celtic) | 53°01′S 342°32′W﻿ / ﻿53.02°S 342.53°W﻿ / -53.02; -342.53﻿ (Creidne Patera) | 152.82 | Yes |
| Cuchi Patera | Cuchi (Australian Aboriginal) | 0°54′S 144°34′W﻿ / ﻿0.9°S 144.57°W﻿ / -0.9; -144.57﻿ (Cuchi Patera) | 76.28 | Yes |
| Culann Patera | Culann (Celtic) | 20°13′S 160°10′W﻿ / ﻿20.22°S 160.17°W﻿ / -20.22; -160.17﻿ (Culann Patera) | 54.48 | Yes |
| Daedalus Patera | Daedalus (Greek) | 19°31′N 274°21′W﻿ / ﻿19.52°N 274.35°W﻿ / 19.52; -274.35﻿ (Daedalus Patera) | 73.29 | Yes |
| Dazhbog Patera | Dazhbog (Slavic) | 55°06′N 301°29′W﻿ / ﻿55.1°N 301.48°W﻿ / 55.1; -301.48﻿ (Dazhbog Patera) | 118.39 | Yes |
| Dingir Patera | Dingir (Sumerian) | 4°08′S 341°22′W﻿ / ﻿4.13°S 341.37°W﻿ / -4.13; -341.37﻿ (Dingir Patera) | 47.38 | No |
| Dusura Patera | Dusura (Nabataean) | 37°28′N 119°01′W﻿ / ﻿37.47°N 119.02°W﻿ / 37.47; -119.02﻿ (Dusura Patera) | 68.58 | Yes |
| Ekhi Patera | Ekhi (Basque) | 28°21′S 88°30′W﻿ / ﻿28.35°S 88.5°W﻿ / -28.35; -88.5﻿ (Ekhi Patera) | 51.04 | Yes |
| Emakong Patera | Emakong (Sulca people of New Britain) | 3°20′S 119°49′W﻿ / ﻿3.33°S 119.82°W﻿ / -3.33; -119.82﻿ (Emakong Patera) | 80.08 | Yes |
| Estan Patera | Estan (Hittite) | 21°37′N 87°43′W﻿ / ﻿21.61°N 87.71°W﻿ / 21.61; -87.71﻿ (Estan Patera) | 95.0 | Yes |
| Fo Patera | Fo (Chinese) | 40°47′N 192°15′W﻿ / ﻿40.79°N 192.25°W﻿ / 40.79; -192.25﻿ (Fo Patera) | 47.15 | Yes |
| Fuchi Patera | Kamuy Fuchi (Ainu) | 28°20′N 327°34′W﻿ / ﻿28.34°N 327.57°W﻿ / 28.34; -327.57﻿ (Fuchi Patera) | 63.67 | Yes |
| Gabija Patera | Gabija (Lithuanian) | 51°54′S 202°32′W﻿ / ﻿51.9°S 202.53°W﻿ / -51.9; -202.53﻿ (Gabija Patera) | 48.0 | Yes |
| Galai Patera | Galai (Mongol) | 10°52′S 288°07′W﻿ / ﻿10.87°S 288.11°W﻿ / -10.87; -288.11﻿ (Galai Patera) | 105.23 | No |
| Gauwa Patera | Gauwa (!Kung) | 35°39′N 12°11′W﻿ / ﻿35.65°N 12.18°W﻿ / 35.65; -12.18﻿ (Gauwa Patera) | 27.00 | Yes |
| Gibil Patera | Gibil (Sumerian) | 14°59′S 294°38′W﻿ / ﻿14.99°S 294.64°W﻿ / -14.99; -294.64﻿ (Gibil Patera) | 102.38 | Yes? |
| Girru Patera | Girru (Babylonian) | 22°48′N 239°55′W﻿ / ﻿22.8°N 239.92°W﻿ / 22.8; -239.92﻿ (Girru Patera) | 68.23 | Yes |
| Gish Bar Patera | Gish Bar (Babylonian) | 16°11′N 90°16′W﻿ / ﻿16.18°N 90.26°W﻿ / 16.18; -90.26﻿ (Gish Bar Patera) | 122.25 | Yes |
| Grannos Patera | Grannus (Celtic) | 11°10′N 145°17′W﻿ / ﻿11.17°N 145.29°W﻿ / 11.17; -145.29﻿ (Grannos Patera) | 45.0 | No |
| Grian Patera | Grian (Celtic) | 11°50′S 11°59′W﻿ / ﻿11.84°S 11.98°W﻿ / -11.84; -11.98﻿ (Grian Patera) | 70.0 | Yes |
| Gurzil Patera | Gurzil (Berber) | 50°24′N 48°16′W﻿ / ﻿50.40°N 48.26°W﻿ / 50.40; -48.26﻿ (Gurzil Patera) | 51.00 | Yes |
| Haokah Patera | Haokah (Lakota) | 20°52′S 186°39′W﻿ / ﻿20.87°S 186.65°W﻿ / -20.87; -186.65﻿ (Haokah Patera) | 53.86 | Yes |
| Hatchawa Patera | Hatchawa (Yaroro) | 59°25′S 31°59′W﻿ / ﻿59.42°S 31.99°W﻿ / -59.42; -31.99﻿ (Hatchawa Patera) | 84.98 | No |
| Heiseb Patera | Heiseb (Bushman) | 29°47′N 244°51′W﻿ / ﻿29.79°N 244.85°W﻿ / 29.79; -244.85﻿ (Heiseb Patera) | 62.48 | No |
| Heno Patera | Heno (Iroquois) | 57°08′S 311°28′W﻿ / ﻿57.14°S 311.47°W﻿ / -57.14; -311.47﻿ (Heno Patera) | 71.06 | Yes |
| Hephaestus Patera | Hephaestus (Greek) | 1°57′N 289°47′W﻿ / ﻿1.95°N 289.79°W﻿ / 1.95; -289.79﻿ (Hephaestus Patera) | 38.84 | Yes |
| Hi'iaka Patera | Hi'iaka (Hawaiian) | 3°38′S 79°28′W﻿ / ﻿3.64°S 79.47°W﻿ / -3.64; -79.47﻿ (Hi'iaka Patera) | 128.27 | Yes |
| Hiruko Patera | Hiruko (Japanese) | 65°05′S 328°50′W﻿ / ﻿65.09°S 328.83°W﻿ / -65.09; -328.83﻿ (Hiruko Patera) | 89.54 | No |
| Horus Patera | Horus (Egyptian) | 9°49′S 338°00′W﻿ / ﻿9.82°S 338.0°W﻿ / -9.82; -338.0﻿ (Horus Patera) | 144.21 | No |
| Huo Shen Patera | Huo Shen (Chinese) | 15°01′S 328°59′W﻿ / ﻿15.01°S 328.98°W﻿ / -15.01; -328.98﻿ (Huo Shen Patera) | 62.73 | No |
| Ilmarinen Patera | Ilmarinen (Finnish) | 14°26′S 1°09′W﻿ / ﻿14.44°S 1.15°W﻿ / -14.44; -1.15﻿ (Ilmarinen Patera) | 45.94 | No |
| Inti Patera | Inti (Inca) | 68°22′S 347°31′W﻿ / ﻿68.37°S 347.52°W﻿ / -68.37; -347.52﻿ (Inti Patera) | 70.91 | No |
| Isum Patera | Isum (Assyrian) | 29°49′N 208°28′W﻿ / ﻿29.82°N 208.46°W﻿ / 29.82; -208.46﻿ (Isum Patera) | 62.24 | Yes |
| Itzamna Patera | Itzamna (Mayan) | 16°08′S 99°28′W﻿ / ﻿16.13°S 99.46°W﻿ / -16.13; -99.46﻿ (Itzamna Patera) | 126.36 | Yes |
| Janus Patera | Janus (Roman) | 4°34′S 39°03′W﻿ / ﻿4.56°S 39.05°W﻿ / -4.56; -39.05﻿ (Janus Patera) | 60.07 | Yes |
| Kami-Nari Patera | Kami-Nari (Japanese) | 8°42′S 235°05′W﻿ / ﻿8.7°S 235.08°W﻿ / -8.7; -235.08﻿ (Kami-Nari Patera) | 53.39 | No |
| Kane Patera | Kāne (Hawaiian) | 48°23′S 11°46′W﻿ / ﻿48.39°S 11.77°W﻿ / -48.39; -11.77﻿ (Kane Patera) | 135.77 | No |
| Kanlaon Patera | Kan-Laon (Philippine) | 31°04′S 337°58′W﻿ / ﻿31.06°S 337.96°W﻿ / -31.06; -337.96﻿ (Kanlaon Patera) | 94.0 | Yes |
| Karei Patera | Karei (Semang people of the Malay Peninsula) | 0°12′N 13°05′W﻿ / ﻿0.2°N 13.08°W﻿ / 0.2; -13.08﻿ (Karei Patera) | 35.29 | Yes |
| Kava Patera | Kava (mythology) (Persian) | 16°50′S 341°20′W﻿ / ﻿16.83°S 341.33°W﻿ / -16.83; -341.33﻿ (Kava Patera) | 63.82 | No |
| Khalla Patera | Khalla (Bushman) | 5°08′N 303°34′W﻿ / ﻿5.14°N 303.56°W﻿ / 5.14; -303.56﻿ (Khalla Patera) | 48.24 | No |
| Kibero Patera | Kibero (Yaroro) | 11°50′S 305°07′W﻿ / ﻿11.83°S 305.11°W﻿ / -11.83; -305.11﻿ (Kibero Patera) | 63.13 | No |
| Kinich Ahau Patera | Kinich Ahau (Mayan) | 49°20′N 310°12′W﻿ / ﻿49.34°N 310.2°W﻿ / 49.34; -310.2﻿ (Kinich Ahau Patera) | 45.21 | Yes |
| Kotar Patera | Kothar-wa-Khasis (Ugaritic) | 11°11′N 61°22′W﻿ / ﻿11.18°N 61.37°W﻿ / 11.18; -61.37﻿ (Kotar Patera) | 67.00 | Yes |
| Kurdalagon Patera | Kurdalagon (Ossetian) | 49°37′S 217°59′W﻿ / ﻿49.61°S 217.99°W﻿ / -49.61; -217.99﻿ (Kurdalagon Patera) | 28.15 | Yes |
| Laki-oi Patera | Laki-oi (Kayan people of Borneo) | 38°56′S 61°56′W﻿ / ﻿38.94°S 61.93°W﻿ / -38.94; -61.93﻿ (Laki-oi Patera) | 105.16 | No |
| Llew Patera | Llew (Celtic) | 12°10′N 242°19′W﻿ / ﻿12.16°N 242.31°W﻿ / 12.16; -242.31﻿ (Llew Patera) | 78.0 | Yes |
| Loki Patera | Loki (Norse) | 12°58′N 308°48′W﻿ / ﻿12.97°N 308.8°W﻿ / 12.97; -308.8﻿ (Loki Patera) | 227.79 | Yes |
| Lu Huo Patera | Lu Huo (Chinese) | 38°31′S 353°10′W﻿ / ﻿38.52°S 353.17°W﻿ / -38.52; -353.17﻿ (Lu Huo Patera) | 63.95 | No |
| Maasaw Patera | Masau'u (Hopi) | 40°17′S 339°05′W﻿ / ﻿40.28°S 339.09°W﻿ / -40.28; -339.09﻿ (Maasaw Patera) | 43.99 | No |
| Mafuike Patera | Mahu-ike (Polynesian) | 13°31′S 259°28′W﻿ / ﻿13.52°S 259.47°W﻿ / -13.52; -259.47﻿ (Mafuike Patera) | 148.32 | No |
| Malik Patera | Malik (Babylonian and Canaanite) | 34°09′S 129°35′W﻿ / ﻿34.15°S 129.59°W﻿ / -34.15; -129.59﻿ (Malik Patera) | 121.68 | Yes |
| Mama Patera | Mama (Chibchan people of Central America) | 11°17′S 355°19′W﻿ / ﻿11.28°S 355.31°W﻿ / -11.28; -355.31﻿ (Mama Patera) | 15.72 | No |
| Mandulis Patera | Mandulis (Kushite) | 30°25′S 305°31′W﻿ / ﻿30.42°S 305.52°W﻿ / -30.42; -305.52﻿ (Mandulis Patera) | 37.00 | Yes |
| Manua Patera | Manua (Hawaiian) | 35°47′N 321°44′W﻿ / ﻿35.78°N 321.73°W﻿ / 35.78; -321.73﻿ (Manua Patera) | 110.51 | Yes |
| Masaya Patera | Masaya (Nicaraguan) | 22°37′S 344°29′W﻿ / ﻿22.62°S 344.49°W﻿ / -22.62; -344.49﻿ (Masaya Patera) | 55.09 | No |
| Maui Patera | Māui (Hawaiian) | 16°37′N 124°15′W﻿ / ﻿16.61°N 124.25°W﻿ / 16.61; -124.25﻿ (Maui Patera) | 37.84 | Yes |
| Mazda Paterae | Ahura Mazda (Zoroastrian) | 8°49′S 313°17′W﻿ / ﻿8.81°S 313.28°W﻿ / -8.81; -313.28﻿ (Mazda Paterae) | 240.78 | Yes |
| Mbali Patera | Mbali (Pygmy) | 31°30′S 5°04′W﻿ / ﻿31.5°S 5.06°W﻿ / -31.5; -5.06﻿ (Mbali Patera) | 40.7 | Yes |
| Menahka Patera | Menahka (Mandan) people of North America) | 31°19′S 344°45′W﻿ / ﻿31.31°S 344.75°W﻿ / -31.31; -344.75﻿ (Menahka Patera) | 9.15 | No |
| Mentu Patera | Mentu (Egyptian) | 7°00′N 139°22′W﻿ / ﻿7.0°N 139.36°W﻿ / 7.0; -139.36﻿ (Mentu Patera) | 103.0 | No |
| Michabo Patera | Michabo (Algonquian peoples of North America) | 1°12′N 167°36′W﻿ / ﻿1.2°N 167.6°W﻿ / 1.2; -167.6﻿ (Michabo Patera) | 104.0 | Yes |
| Mihr Patera | Mihr (Armenian) | 16°31′S 305°27′W﻿ / ﻿16.51°S 305.45°W﻿ / -16.51; -305.45﻿ (Mihr Patera) | 61.72 | Yes |
| Mithra Patera | Mithra (Zoroastrian) | 59°00′S 266°28′W﻿ / ﻿59.0°S 266.46°W﻿ / -59.0; -266.46﻿ (Mithra Patera) | 33.78 | Yes |
| Monan Patera | a god of the Tupí-Guaraní (Brazil) | 19°43′N 105°23′W﻿ / ﻿19.72°N 105.39°W﻿ / 19.72; -105.39﻿ (Monan Patera) | 112.89 | Yes |
| Mulungu Patera | Mulungu (East African) | 17°16′N 217°52′W﻿ / ﻿17.26°N 217.87°W﻿ / 17.26; -217.87﻿ (Mulungu Patera) | 62.48 | Yes |
| Namarrkun Patera | Namarrkun (Australian Aboriginal) | 10°04′N 175°31′W﻿ / ﻿10.06°N 175.52°W﻿ / 10.06; -175.52﻿ (Namarrkun Patera) | 16.69 | No |
| Nina Patera | Nina (Inca) | 38°14′S 162°36′W﻿ / ﻿38.24°S 162.6°W﻿ / -38.24; -162.6﻿ (Nina Patera) | 52.07 | No |
| Nunurta Patera | Ninurta (Sumerian and Akkadian) | 16°44′S 315°15′W﻿ / ﻿16.74°S 315.25°W﻿ / -16.74; -315.25﻿ (Nunurta Patera) | 82.34 | No |
| Nusku Patera | Nusku (Assyrian) | 65°01′S 3°49′W﻿ / ﻿65.01°S 3.82°W﻿ / -65.01; -3.82﻿ (Nusku Patera) | 124.31 | Yes |
| Nyambe Patera | Nyambe (Zambezi) | 0°23′N 343°07′W﻿ / ﻿0.38°N 343.11°W﻿ / 0.38; -343.11﻿ (Nyambe Patera) | 58.15 | No |
| Odqan Patera | Odqan (Mongol) | 42°20′S 174°22′W﻿ / ﻿42.33°S 174.36°W﻿ / -42.33; -174.36﻿ (Odqan Patera) | 86 | Yes |
| Olafat Patera | Olafat (Caroline Islands) | 62°40′S 244°23′W﻿ / ﻿62.66°S 244.39°W﻿ / -62.66; -244.39﻿ (Olafat Patera) | 119 | Yes |
| Ot Patera | Ot Ene (Mongol) | 1°06′N 217°24′W﻿ / ﻿1.1°N 217.4°W﻿ / 1.1; -217.4﻿ (Ot Patera) | 52.26 | Yes |
| Päive Patera | Päive (Sami) | 45°43′S 358°32′W﻿ / ﻿45.71°S 358.54°W﻿ / -45.71; -358.54﻿ (Päive Patera) | 59.05 | No |
| Päive Patera | Päive (Sami) | 45°43′S 358°32′W﻿ / ﻿45.71°S 358.54°W﻿ / -45.71; -358.54﻿ (Päive Patera) | 59.05 | Yes |
| Pajonn Patera | Pajonn (Sami) | 45°43′S 358°32′W﻿ / ﻿45.71°S 358.54°W﻿ / -45.71; -358.54﻿ (Päive Patera) | 59.05 | Yes |
| Pautiwa Patera | Pautiwa (Hopi) | 34°12′S 345°35′W﻿ / ﻿34.2°S 345.59°W﻿ / -34.2; -345.59﻿ (Pautiwa Patera) | 6.62 | No |
| Pillan Patera | Pillan (Mapuche people of South America) | 12°20′S 243°15′W﻿ / ﻿12.34°S 243.25°W﻿ / -12.34; -243.25﻿ (Pillan Patera) | 73.43 | Yes |
| Podja Patera | Podja (Evenk people of Russia and China) | 18°25′S 304°44′W﻿ / ﻿18.41°S 304.74°W﻿ / -18.41; -304.74﻿ (Podja Patera) | 67.03 | No |
| Prometheus Patera | Prometheus (Greek) | 0°37′S 152°27′W﻿ / ﻿0.62°S 152.45°W﻿ / -0.62; -152.45﻿ (Prometheus Patera) | 73.43 | Yes |
| Purgine Patera | Purgine (Mordvin people of Russia) | 2°37′S 297°18′W﻿ / ﻿2.61°S 297.3°W﻿ / -2.61; -297.3﻿ (Purgine Patera) | 35.74 | No |
| Pyerun Patera | Perun (Slavic) | 55°38′S 251°13′W﻿ / ﻿55.64°S 251.21°W﻿ / -55.64; -251.21﻿ (Pyerun Patera) | 52.18 | Yes |
| Ra Patera | Ra (Egyptian) | 8°40′S 324°42′W﻿ / ﻿8.66°S 324.7°W﻿ / -8.66; -324.7﻿ (Ra Patera) | 39.11 | Yes |
| Radegast Patera | Radegast (Slavic) | 27°47′S 159°59′W﻿ / ﻿27.78°S 159.98°W﻿ / -27.78; -159.98﻿ (Radegast Patera) | 27.11 | Yes |
| Rarog Patera | Rarog (Slavic) | 41°43′S 304°25′W﻿ / ﻿41.71°S 304.41°W﻿ / -41.71; -304.41﻿ (Rarog Patera) | 104.35 | Yes |
| Rata Patera | Rātā (Māori) | 35°37′S 199°47′W﻿ / ﻿35.61°S 199.78°W﻿ / -35.61; -199.78﻿ (Rata Patera) | 46.31 | Yes |
| Reiden Patera | Reiden (Japanese) | 13°24′S 235°27′W﻿ / ﻿13.4°S 235.45°W﻿ / -13.4; -235.45﻿ (Reiden Patera) | 73.26 | Yes |
| Reshef Patera | Reshef (Phoenician) | 27°41′N 158°04′W﻿ / ﻿27.69°N 158.06°W﻿ / 27.69; -158.06﻿ (Reshef Patera) | 62.0 | No |
| Reshet Paterae | Reshet (Aramaic) | 0°32′S 305°29′W﻿ / ﻿0.53°S 305.48°W﻿ / -0.53; -305.48﻿ (Reshet Paterae) | 148.34 | No |
| Ruaumoko Patera | Ruaumoko (Māori) | 14°43′N 139°44′W﻿ / ﻿14.72°N 139.74°W﻿ / 14.72; -139.74﻿ (Ruaumoko Patera) | 19.0 | Yes |
| Ruwa Patera | Ruwa (East African) | 0°11′N 1°45′W﻿ / ﻿0.19°N 1.75°W﻿ / 0.19; -1.75﻿ (Ruwa Patera) | 62.44 | Yes |
| Savitr Patera | Savitr (Hindu) | 48°11′N 123°22′W﻿ / ﻿48.19°N 123.36°W﻿ / 48.19; -123.36﻿ (Savitr Patera) | 92.48 | No |
| Sêd Patera | Sêd (Phoenician) | 2°55′S 303°34′W﻿ / ﻿2.91°S 303.57°W﻿ / -2.91; -303.57﻿ (Sêd Patera) | 52.1 | No |
| Sengen Patera | Sengen (Japanese) | 32°53′S 303°44′W﻿ / ﻿32.89°S 303.73°W﻿ / -32.89; -303.73﻿ (Sengen Patera) | 63.64 | Yes |
| Seth Patera | Seth (Egyptian) | 5°21′S 131°40′W﻿ / ﻿5.35°S 131.67°W﻿ / -5.35; -131.67﻿ (Seth Patera) | 59.82 | Yes |
| Sethlaus Patera | Sethlans (Etruscan) | 52°17′S 193°50′W﻿ / ﻿52.29°S 193.83°W﻿ / -52.29; -193.83﻿ (Sethlaus Patera) | 78.57 | Yes |
| Shakuru Patera | Shakuru (Pawnee people of North America) | 24°07′S 265°44′W﻿ / ﻿24.12°S 265.74°W﻿ / -24.12; -265.74﻿ (Shakuru Patera) | 105.01 | Yes |
| Shamash Patera | Shamash (Babylonian and Assyrian) | 34°59′S 152°35′W﻿ / ﻿34.99°S 152.59°W﻿ / -34.99; -152.59﻿ (Shamash Patera) | 205.3 | Yes |
| Shamshu Patera | Shamshu (Arabian) | 10°04′S 62°58′W﻿ / ﻿10.07°S 62.97°W﻿ / -10.07; -62.97﻿ (Shamshu Patera) | 96.36 | Yes |
| Shango Patera | Shango (Yorùbá) | 32°21′N 100°31′W﻿ / ﻿32.35°N 100.52°W﻿ / 32.35; -100.52﻿ (Shango Patera) | 90.22 | Yes |
| Shoshu Patera | Shoshu (Caucasian) | 20°22′S 324°40′W﻿ / ﻿20.36°S 324.67°W﻿ / -20.36; -324.67﻿ (Shoshu Patera) | 13.08 | No |
| Shurdi Patera | Shurdh (Albanian) | 38°28′S 290°44′W﻿ / ﻿38.47°S 290.74°W﻿ / -38.47; -290.74﻿ (Shurdi Patera) | 13.08 | Yes |
| Sigurd Patera | Sigurd (Norse) | 5°56′S 97°56′W﻿ / ﻿5.94°S 97.93°W﻿ / -5.94; -97.93﻿ (Sigurd Patera) | 68.6 | Yes |
| Siun Patera | Siun (Nanai people of Siberia) | 49°50′S 0°26′W﻿ / ﻿49.84°S 0.44°W﻿ / -49.84; -0.44﻿ (Siun Patera) | 52.5 | No |
| Steropes Patera | Steropes (Greek) | 15°32′N 138°51′W﻿ / ﻿15.54°N 138.85°W﻿ / 15.54; -138.85﻿ (Siun Patera) | 20.0 | No |
| Sui Jen Patera | Sui Jen (Chinese) | 19°06′S 2°39′W﻿ / ﻿19.1°S 2.65°W﻿ / -19.1; -2.65﻿ (Sui Jen Patera) | 33.78 | No |
| Surya Patera | Surya (Hindu) | 21°28′S 151°35′W﻿ / ﻿21.47°S 151.59°W﻿ / -21.47; -151.59﻿ (Surya Patera) | 49.81 | Yes |
| Susanoo Patera | Susanoo (Japanese) | 22°23′N 219°48′W﻿ / ﻿22.39°N 219.8°W﻿ / 22.39; -219.8﻿ (Susanoo Patera) | 58.41 | Yes |
| Svarog Patera | Svarog (Slavic) | 48°40′S 265°44′W﻿ / ﻿48.66°S 265.74°W﻿ / -48.66; -265.74﻿ (Svarog Patera) | 124.03 | Yes |
| Tabiti Patera | Tabiti (Scythian) | 6°45′S 275°54′W﻿ / ﻿6.75°S 275.90°W﻿ / -6.75; -275.90﻿ (Tabiti Patera) | 103 | Yes |
| Talos Patera | Talos (Greek) | 26°23′S 354°45′W﻿ / ﻿26.39°S 354.75°W﻿ / -26.39; -354.75﻿ (Talos Patera) | 24.67 | No |
| Taranis Patera | Taranis (Celtic) | 71°22′S 25°32′W﻿ / ﻿71.37°S 25.53°W﻿ / -71.37; -25.53﻿ (Taranis Patera) | 130.67 | No |
| Taw Patera | Taw (Monguor) | 33°39′S 358°22′W﻿ / ﻿33.65°S 358.37°W﻿ / -33.65; -358.37﻿ (Taw Patera) | 4.74 | No |
| Tawhaki Patera | Tawhaki (Maori) | 3°19′N 76°11′W﻿ / ﻿3.32°N 76.18°W﻿ / 3.32; -76.18﻿ (Tawhaki Patera) | 49.85 | Yes |
| Thomagata Patera | Thomagata (Muisca) | 25°40′N 165°56′W﻿ / ﻿25.67°N 165.94°W﻿ / 25.67; -165.94﻿ (Thomagata Patera) | 59.0 | No |
| Tien Mu Patera | Tien Mu (Chinese) | 12°19′N 134°18′W﻿ / ﻿12.31°N 134.3°W﻿ / 12.31; -134.3﻿ (Tawhaki Patera) | 28.0 | Yes |
| Tiermes Patera | Tiermes (Sami) | 22°23′N 349°57′W﻿ / ﻿22.38°N 349.95°W﻿ / 22.38; -349.95﻿ (Tiermes Patera) | 79.76 | Yes |
| Tiwaz Patera | Tiwaz (Luwian) | 70°26′S 279°45′W﻿ / ﻿70.44°S 279.75°W﻿ / -70.44; -279.75﻿ (Tiwaz Patera) | 78 | Yes |
| Tohil Patera | Tohil (Mayan) | 25°38′S 158°40′W﻿ / ﻿25.63°S 158.66°W﻿ / -25.63; -158.66﻿ (Tohil Patera) | 76.59 | No |
| Tol-Ava Patera | Tol-Ava (Mordvin people of Russia) | 1°48′N 322°08′W﻿ / ﻿1.8°N 322.14°W﻿ / 1.8; -322.14﻿ (Tol-Ava Patera) | 84.53 | No |
| Tung Yo Patera | Tung Yo (Chinese) | 18°16′S 0°56′W﻿ / ﻿18.27°S 0.93°W﻿ / -18.27; -0.93﻿ (Tung Yo Patera) | 59.68 | No |
| Tupan Patera | the thunder god Tupan of the Tupí-Guaraní people of Brazil | 18°44′S 141°08′W﻿ / ﻿18.73°S 141.13°W﻿ / -18.73; -141.13﻿ (Tupan Patera) | 79.13 | Yes |
| Tvashtar Paterae | Tvashtri (Hindu) | 62°46′N 123°32′W﻿ / ﻿62.76°N 123.53°W﻿ / 62.76; -123.53﻿ (Tvashtar Paterae) | 306.19 | Yes |
| Ukko Patera | Ukko (Finnish) | 30°57′N 18°25′W﻿ / ﻿30.95°N 18.41°W﻿ / 30.95; -18.41﻿ (Ukko Patera) | 35.25 | Yes |
| Ülgen Patera | Ülgen (Siberian) | 40°51′S 287°19′W﻿ / ﻿40.85°S 287.31°W﻿ / -40.85; -287.31﻿ (Ülgen Patera) | 43.89 | Yes |
| Uta Patera | Utu (Sumerian) | 35°52′S 22°24′W﻿ / ﻿35.86°S 22.4°W﻿ / -35.86; -22.4﻿ (Uta Patera) | 43.89 | Yes |
| Vahagn Patera | Vahagn (Armenian) | 24°07′S 350°45′W﻿ / ﻿24.11°S 350.75°W﻿ / -24.11; -350.75﻿ (Vahagn Patera) | 99.6 | No |
| Verbti Patera | Verbt (Albanian) | 37°59′N 87°55′W﻿ / ﻿37.99°N 87.92°W﻿ / 37.99; -87.92﻿ (Verbti Patera) | 62.00 | Yes |
| Viracocha Patera | Viracocha (Inca) | 61°46′S 280°05′W﻿ / ﻿61.77°S 280.09°W﻿ / -61.77; -280.09﻿ (Viracocha Patera) | 59.3 | Yes |
| Vivasvant Patera | Vivasvant (Hindu) | 75°08′N 293°59′W﻿ / ﻿75.14°N 293.98°W﻿ / 75.14; -293.98﻿ (Vivasvant Patera) | 83.19 | Yes |
| Wabasso Patera | Wabasso (Potawatomi people of North America) | 22°54′S 166°42′W﻿ / ﻿22.9°S 166.7°W﻿ / -22.9; -166.7﻿ (Wabasso Patera) | 32.0 | No |
| Wanajo Patera | Wanajo (Louisiade Archipelago) | 58°45′S 178°52′W﻿ / ﻿58.75°S 178.87°W﻿ / -58.75; -178.87﻿ (Wanajo Patera) | 24.0 | Yes |
| Wayland Patera | Wayland the Smith (Germanic) | 32°48′S 225°14′W﻿ / ﻿32.8°S 225.23°W﻿ / -32.8; -225.23﻿ (Wayland Patera) | 63.37 | Yes |
| Yaw Patera | Yaw (Hebrew) | 9°54′N 132°12′W﻿ / ﻿9.9°N 132.2°W﻿ / 9.9; -132.2﻿ (Yaw Patera) | 39.0 | Yes |
| Yeloje Patera | Yeloje (Yukaghir) | 20°06′N 132°24′W﻿ / ﻿20.10°N 132.40°W﻿ / 20.10; -132.40﻿ (Yeloje Patera) | 107.00 | Yes |
| Zal Patera | Zal (Persian) | 40°15′N 74°30′W﻿ / ﻿40.25°N 74.5°W﻿ / 40.25; -74.5﻿ (Zal Patera) | 165.94 | Yes |

## Lava flows

Ionian fluctūs (areas of lava flow) are named after fire and thunder gods in various mythologies, or after locations in Greek mythology associated with Io. Coordinate, length, and name source come from the IAU's Solar System Nomenclature Website. Notes on whether the lava flow has been observed as part of an active volcano by either ground-based astronomers, the Hubble Space Telescope, or the various spacecraft that have encountered the Jupiter system come from the book, Volcanism on Io, unless otherwise noted.
| Fluctus | Named after | Coordinates | Length | Activity Observed |
| Acala Fluctus | Acala (Buddhism) | 8°58′N 334°35′W﻿ / ﻿8.97°N 334.59°W﻿ / 8.97; -334.59﻿ (Acala Fluctus) | 411.11 km | Yes |
| Arinna Fluctus | Arinna (Hittite) | 31°14′N 149°10′W﻿ / ﻿31.24°N 149.16°W﻿ / 31.24; -149.16﻿ (Arinna Fluctus) | 121.94 km | Yes |
| Donar Fluctus | Donar (Germanic) | 22°40′N 187°38′W﻿ / ﻿22.67°N 187.63°W﻿ / 22.67; -187.63﻿ (Donar Fluctus) | 222.47 km | Yes |
| Euboea Fluctūs | Euboea (Greek) | 45°01′S 350°58′W﻿ / ﻿45.01°S 350.96°W﻿ / -45.01; -350.96﻿ (Euboea Fluctūs) | 104.82 km | No |
| Fjorgynn Fluctus | Fjorgyn (Norse) | 11°14′N 358°05′W﻿ / ﻿11.23°N 358.08°W﻿ / 11.23; -358.08﻿ (Fjorgynn Fluctus) | 414.07 km | Yes |
| Kanehekili Fluctus | Kāne Milohai (Hawaiian) | 17°41′S 33°34′W﻿ / ﻿17.68°S 33.56°W﻿ / -17.68; -33.56﻿ (Kanehekili Fluctus) | 243.47 km | Yes |
| Lei-Kung Fluctus | Lei Gong (Chinese) | 40°24′N 206°28′W﻿ / ﻿40.4°N 206.47°W﻿ / 40.4; -206.47﻿ (Lei-Kung Fluctus) | 386.17 km | Yes |
| Lei-zi Fluctus | Leizi (Chinese) | 14°15′N 46°10′W﻿ / ﻿14.25°N 46.16°W﻿ / 14.25; -46.16﻿ (Lei-zi Fluctus) | 361.1 km | No |
| Marduk Fluctus | Marduk (Sumerian) | 27°35′S 210°50′W﻿ / ﻿27.59°S 210.83°W﻿ / -27.59; -210.83﻿ (Marduk Fluctus) | 169.43 km | Yes |
| Masubi Fluctus | Ho-Masubi (Japanese) | 50°29′S 58°08′W﻿ / ﻿50.49°S 58.13°W﻿ / -50.49; -58.13﻿ (Masubi Fluctus) | 501.33 km | Yes |
| Mixcoatl Fluctus | Mixcoatl (Aztec) | 46°19′S 141°09′W﻿ / ﻿46.32°S 141.15°W﻿ / -46.32; -141.15﻿ (Mixcoatl Fluctus) | 246.0 km | Yes |
| Quzah Fluctūs | Quzah (Arabian) | 31°46′S 311°34′W﻿ / ﻿31.76°S 311.57°W﻿ / -31.76; -311.57﻿ (Quzah Fluctūs) | 189.0 km | Yes |
| Sobo Fluctus | Sobo (Vodou) | 14°05′N 150°35′W﻿ / ﻿14.08°N 150.59°W﻿ / 14.08; -150.59﻿ (Sobo Fluctus) | 58.83 km | Yes |
| Tsũi Goab Fluctus | Tsui (Khoikhoi) | 1°24′S 163°24′W﻿ / ﻿1.4°S 163.4°W﻿ / -1.4; -163.4﻿ (Tsũi Goab Fluctus) | 117.0 km | Yes |
| Tung Yo Fluctus | Tung Yo (Chinese) | 16°36′S 356°29′W﻿ / ﻿16.6°S 356.49°W﻿ / -16.6; -356.49﻿ (Tung Yo Fluctus) | 459.37 km | No |
| Upulevo Fluctus | Upulevo (Timorese) | 79°53′S 314°55′W﻿ / ﻿79.88°S 314.92°W﻿ / -79.88; -314.92﻿ (Upulevo Fluctus) | 113.0 km | Yes |
| Uta Fluctus | Utu (Sumerian) | 33°03′S 16°39′W﻿ / ﻿33.05°S 16.65°W﻿ / -33.05; -16.65﻿ (Uta Fluctus) | 332.31 km | No |

## Shield volcanoes

Ionian shield volcanoes or tholi are named after mythological figures associated with fire or with the nymph Io.
| Tholus | Named after | Coordinates | Length | Height |
| Apis Tholus | Apis (Greek) | 10°54′S 347°53′W﻿ / ﻿10.9°S 347.88°W﻿ / -10.9; -347.88﻿ (Apis Tholus) | 145.71 km | N/A |
| Inachus Tholus | Inachus (Greek) | 16°11′S 347°46′W﻿ / ﻿16.18°S 347.76°W﻿ / -16.18; -347.76﻿ (Inachus Tholus) | 176.96 km | 1.8 km |
| Tsũi Goab Tholus | Tsui (Khoikhoi) | 0°06′S 163°00′W﻿ / ﻿0.1°S 163.0°W﻿ / -0.1; -163.0﻿ (Tsũi Goab Tholus) | 53.0 km | 0.8 km |

## Lava channels

Ionian lava channels that cut into the surrounding terrain use the term vallis.
| Vallis | Named after | Coordinates | Length |
| Tawhaki Vallis | Tawhaki (Maori) | 0°30′N 72°48′W﻿ / ﻿0.5°N 72.8°W﻿ / 0.5; -72.8﻿ (Tawhaki Vallis) | 190.0 kilometer (km) |