| Feature Name | Latitude | Longitude | Diameter (km) | Origin |
|---|
| Abus Vallis | -5.5 | -147.3 | 58 | Classical name for Humber River in England. |
| Al-Qahira Vallis | -18.2 | 162.5 | 555 | Word for 'Mars' in Arabic, Indonesian, Malay. |
| Allegheny Vallis | -9.1 | -54 | 200 | River in Pennsylvania, USA. |
| Anio Valles | 37.8 | 55.9 | 36.5 | Classical river in Italy; modern Aniene and Teverone rivers. |
| Apsus Vallis | 34.8 | 135 | 120 | Classical river in ancient Macedonia, present-day Greece. |
| Arda Valles | -20.6 | -32.3 | 186 | Ancient European river (Bulgaria). |
| Ares Vallis | 10.3 | -25.8 | 1,700 | Word for 'Mars' in Greek. |
| Arnus Vallis | 13.9 | 70.5 | 280 | Classical and present day Arno River in Tuscany, Italy (previously named Arena Rupes). |
| Asopus Vallis | -4.4 | -149.7 | 33 | Classical name for modern Hagios River, Greece. |
| Athabasca Valles | 8.5 | 155 | 285 | River in Canada. (Changed from Athabasca Vallis.) |
| Auqakuh Vallis | 30.1 | 60.1 | 312 | Word for 'Mars' in Quechua (Inca). |
| Axius Valles | -55.7 | 70.1 | 349 | Ancient European River (Vardar River of Greece). |
| Bahram Vallis | 20.5 | -57.5 | 302 | Word for 'Mars' in Persian. |
| Brazos Valles | -6.2 | 18.9 | 458 | River in Texas, USA. |
| Buvinda Vallis | 33.1 | 151.9 | 119.6 | Classical river in Hibernia; present Boyne River, Ireland. |
| Chico Valles | -66.8 | -153.5 | 450 | River in Argentina. |
| Clanis Valles | 33.2 | 58.4 | 58 | Classical river in Etruria; present Chiana River, Italy. |
| Clasia Vallis | 33.8 | 56.9 | 125 | Classical river in Umbria, Italy. |
| Clota Vallis | -25.5 | -20.6 | 112 | Ancient name for present River Clyde, Scotland. |
| Columbia Valles | -9.4 | -42.9 | 94 | River in Washington, USA. |
| Coogoon Valles | 17.1 | -21.9 | 300 | River in Australia. |
| Cusus Valles | 14.3 | 50.5 | 249 | Classical name for modern Hron River in Czechoslavakia. |
| Daga Vallis | -12 | -42.4 | 70 | River in Burma. |
| Dao Vallis | -38.4 | 87.9 | 816 | Word for "star" in Thai. |
| [Deva Valles] | -7.8 | -156.9 | 0 | Classical river in Scotland. |
| Deva Vallis | -7.6 | -157 | 48 | Classical name for Dee River in Scotland; new position and coordinates. |
| Dittaino Valles | -1.5 | -67 | 138 | Modern river in Italy. |
| Doanus Vallis | -63 | -25.6 | 131 | Classical river shown in Ptolemy's map; may be modern Mekong River of Burma. |
| Drava Valles | -48.7 | 166.3 | 150 | Modern river in Yugoslavia. |
| Drilon Vallis | 7.2 | -52.4 | 94 | Classical name for present Drin River, Albania. |
| [Drinus Valles] | -23 | -17.5 | 0 | Ancient European river (Yugoslavia); dropped 1984. |
| Dubis Vallis | -5.2 | -148.2 | 37 | Classical name for modern Doubs River, France. |
| Durius Valles | -17.4 | 172.1 | 223 | Classical name for modern Douro River, Portugal. |
| Dzigai Vallis | -58.5 | -36.6 | 326 | Word for "valley" in Navajo. |
| Elaver Vallis | -9.4 | -49.5 | 160 | Classical name for modern Allier River, France. |
| Enipeus Vallis | 36.7 | -93.1 | 357 | Classical river. |
| Evros Vallis | -12.6 | 13.9 | 335 | River in Greece. |
| Frento Vallis | -50 | -14.5 | 277 | Classical name for river in Italy. |
| Granicus Valles | 29.7 | 131 | 750 | Ancient name for river in Turkey. |
| Grjotá Valles | 15.4 | 165.4 | 370 | River in Iceland. |
| Harmakhis Vallis | -40.5 | 90.4 | 475 | Ancient Egyptian word for "Mars." |
| Hebrus Valles | 20 | 126.6 | 317 | Ancient river in Greece. |
| Her Desher Vallis | -25.1 | -48 | 107 | Egyptian name for Mars. |
| Hermus Vallis | -5.3 | -148 | 46 | Classical name for river in ancient Lydia (modern Turkey). |
| Himera Valles | -21.4 | -22.8 | 160 | Ancient name for Italian river. |
| Hrad Vallis | 38.4 | 135.3 | 825 | Word for "Mars" in Armenian. |
| Huo Hsing Vallis | 30.2 | 66.6 | 318 | Word for "Mars" in Chinese. |
| Hypanis Valles | 9.5 | -46.7 | 231 | Classical name for river in Scythia; present Kuban River in Russia. |
| Hypsas Vallis | 33.7 | 57.9 | 32.8 | Classical name for river in Sicily. |
| Iberus Vallis | 21.3 | 152 | 80.2 | Classical name for river present Ebro River in NE Spain. |
| Indus Vallis | 19.1 | 38.7 | 307 | Ancient and modern name for river in Pakistan. |
| Isara Valles | -5.3 | -146.6 | 8 | Classical name for modern Oise River in France. |
| Ituxi Vallis | 25.1 | 153 | 62 | River in Brazil. |
| Kasei Valles | 24.4 | -65 | 1,780 | Word for "Mars" in Japanese. |
| Labou Vallis | -8.6 | -154.5 | 222 | French word for Mars. |
| Ladon Valles | -22.4 | -28.7 | 278 | Ancient name for Greek river. |
| Lethe Vallis | 4 | 153.5 | 225 | River in Katmai National Monument, Alaska, USA. |
| Licus Vallis | -2.9 | 126.1 | 219.1 | Ancient name for modern Lech River, France. |
| Liris Valles | -10.6 | 57.9 | 613 | Ancient name for modern Liri River, Italy. |
| Lobo Vallis | 26.9 | -61.2 | 102 | Modern river in Ivory Coast. |
| Locras Valles | 8.6 | 47.7 | 314 | Ancient name for river on Corsica. |
| Loire Valles | -18.1 | -16.7 | 720 | Modern river in France. |
| Louros Valles | -8.4 | -82 | 517 | Modern river in Greece. |
| Ma'adim Vallis | -21.6 | 177.3 | 825 | Word for "Mars" in Hebrew. |
| Mad Vallis | -56.2 | 76.1 | 524 | Modern river, Vermont, USA. |
| Maja Valles | 12.5 | -58.3 | 1,516 | Nepali word for "Mars". |
| Mamers Valles | 40 | 17.8 | 1,020 | Word for "Mars" in Oscan. |
| Mangala Valles | -11.5 | -151 | 828 | Word for "Mars" in Sanskrit. |
| Marikh Vallis | -19.3 | 3.9 | 1,280 | Malaysian word for Mars. |
| Marte Vallis | 14.8 | -176.5 | 1,185 | Spanish word for "Mars". |
| Matrona Vallis | -7.6 | 176.1 | 51 | Classical name for present Marne River, France. |
| Maumee Valles | 19.5 | -53.2 | 350 | North American river (Indiana, Ohio). |
| Mawrth Vallis | 22.4 | -16.5 | 636 | Welsh word for "Mars". |
| Minio Vallis | -4.3 | -151.8 | 88 | Classical name for river in Italy. |
| Mosa Vallis | -14.7 | 22.2 | 171 | Modern river in Western Europe. |
| Munda Vallis | -5.4 | -146.3 | 10 | Classical name for river in ancient Lusitania, (modern Mondega River in Portugal). |
| Naktong Vallis | 5.2 | 32.9 | 494 | Modern name for river in Korea. |
| Nanedi Valles | 4.8 | -49 | 508 | Word for "planet" in Sesotho, national language of Lesotho, Africa. |
| Naro Vallis | -4 | 60.6 | 393 | Ancient name for modern Neretva River, Yugoslavia. |
| Nestus Valles | -7.1 | -158.6 | 33 | Classical name for river in Macedonia (Greece). |
| Nia Vallis | -53.8 | -34.7 | 133 | Lowell canal name; also classical river name. |
| Nicer Vallis | -7.2 | -158.2 | 54 | Classical name for present Neckar River, Germany. |
| Niger Vallis | -35.1 | 92.2 | 333 | River in Africa. |
| Nirgal Vallis | -28.1 | -42 | 496 | Word for "Mars" in Babylonian. |
| Ochus Valles | 7.1 | -45.1 | 104 | Classical name for present Hari-Rud River in Turkmenistan. |
| Oltis Valles | -23.7 | -21.7 | 173 | Ancient name for modern Lot river, France. |
| Osuga Valles | -15.1 | -38.6 | 185 | River in Russia. |
| Padus Vallis | -4.5 | -150.1 | 46 | Classical name for modern Po River in Italy. |
| Pallacopas Vallis | -55 | -21 | 660 | Lowell canal name; also classical river name. |
| Paraná Valles | -22.9 | -10.2 | 350 | Ancient and modern name for South American river (Brazil, Argentina). |
| Patapsco Vallis | 23.8 | 152.5 | 153 | Modern river in Maryland, USA. |
| Protva Valles | -28.9 | -60.6 | 260 | River in Russia. |
| Rahway Valles | 9.3 | 173.8 | 500 | River in New Jersey, USA. |
| Ravi Vallis | -0.2 | -40.7 | 205.5 | Ancient Pakistani River. |
| Ravius Valles | 46.2 | -111.3 | 233 | Classical name for river in N.W. Ireland. |
| Reull Vallis | -42.3 | 104.1 | 945 | Word for "planet" in Gaelic. |
| Rhabon Valles | 21.2 | -91.5 | 247 | Classical river in Dacia (Romania). |
| Rubicon Valles | 44.7 | -117 | 240 | Ancient river in Italy. |
| Runa Vallis | -28.4 | -36.8 | 39.2 | Name proposed by Soviets. |
| Sabis Vallis | -5.2 | -152.5 | 206 | Classical name for present Sambre River in France and Belgium. |
| Sabrina Vallis | 11.1 | -49 | 237 | Classical name for present Severn River, England. |
| Samara Valles | -24.9 | -19.1 | 615 | Ancient name for modern Somme River, France. |
| Scamander Vallis | 15.8 | 28.5 | 204 | Ancient name of river at Troy (modern Turkey). |
| Senus Vallis | -5.2 | -147 | 20 | Classical river in Ireland. |
| Sepik Vallis | -0.9 | -65.8 | 56 | River in New Guinea. |
| Shalbatana Vallis | 7.7 | -42.1 | 963 | Word for "Mars" in Akkadian. |
| Silinka Vallis | 8.9 | -28.2 | 140 | River in Russia. |
| Simud Vallis | 10.1 | -37.5 | 775 | Word for "Mars" in Sumerian. |
| Stura Vallis | 22.7 | 142.4 | 75 | Classical river east of Rome, Italy. |
| Subur Vallis | 11.7 | -53.2 | 26 | Classical river in Mauritania. |
| Surinda Valles | -28.9 | -35.1 | 95 | Name proposed by Soviets; found on Mars-5 Map. |
| Surius Vallis | -61.5 | -48.4 | 570 | Lowell canal name. |
| Tader Valles | -48.8 | -152.5 | 200 | Ancient name for present Segura River, Spain. |
| Tagus Valles | -6.7 | 114.4 | 155.4 | Ancient and modern river in Spain, Portugal. |
| Taus Vallis | -4.8 | -148.5 | 12.6 | Classical river in Caledonia (Scotland). |
| Termes Vallis | -11.1 | -157.1 | 48 | Classical river in ancient Lusitania, present Tormes River, Spain. |
| Teviot Vallis | -43.4 | 102.1 | 140 | River in Scotland. |
| Tinia Valles | -4.6 | -149 | 18.7 | Classical river in Italy. |
| Tinjar Valles | 37.7 | 124.2 | 425 | Modern river in Sarawak, Malaysia. |
| Tinto Vallis | -4 | 111.4 | 146.5 | River in Spain. |
| Tisia Valles | -11.8 | 45.7 | 399 | Ancient name for modern Tisza River, Ukraine. |
| Tiu Valles | 15.7 | -35.7 | 1,720 | Word for "Mars" in old English (West Germanic). |
| Trebia Valles | 32.1 | 150 | 183 | Classical name for modern Trebbia River, Italy. |
| Tyras Vallis | 8.3 | -50.2 | 68 | Classical name for present Dniester River, Ukraine. |
| Uzboi Vallis | -29.5 | -37.1 | 366 | Dry riverbed in Russia. |
| Valles Marineris | -13.7 | -59.2 | 3,769 | General name of the system of canyons honoring the scientific team of the Mariner 9 program. |
| Varus Valles | -8.6 | -156.2 | 92 | Classical name for present Var River, France. |
| Vedra Valles | 19.2 | -55.6 | 115 | Ancient European river (Great Britain). |
| Verde Vallis | -0.5 | 29.8 | 95 | River in Arizona, USA. |
| Vichada Valles | -19.4 | 88.1 | 430 | River in Colombia. |
| Vistula Valles | 13.6 | -51.9 | 190 | Classical name for modern Wistla River in Poland. |
| Walla Walla Vallis | -9.8 | -54.5 | 24 | River in Washington, USA. |
| Warrego Valles | -41.9 | -93 | 188 | Modern Australian River. |
