Valles (singular vallis) on Mars are similar to valleys on Earth. Some features that take this title may be better described as canyons or chasmata; see List of Chasmata on Mars. Coordinates are given as planetocentric latitude with east longitude. Large valles are named for the words for "Mars" or "star" in various languages, while small ones are named for rivers.
| Name | Coordinates | Length (km) | Namesake | Notes | |
|---|---|---|---|---|---|
| 58.0 | |||||
| 555.0 | Word for "Mars" in Arabic | ||||
| 200.0 | |||||
| 36.5 | Classical name for Aniene River in Italy | ||||
| 120.0 | Classical name for Seman River in Albania | ||||
| 186.0 | |||||
| 1700.0 | Landing site of the Mars Pathfinder | ||||
| 280.0 | |||||
| 33.0 | Classical name for Boeotian Asopus river in Greece | ||||
| 285.0 | Carved by water from Cerberus Fossae | ||||
| 312.0 | |||||
| 349.0 | Classical name for Vardar River in Greece | ||||
| 246.9 | Word for "Mars" in Persian | ||||
| 302.0 | |||||
| 458.0 | |||||
| 119.6 | Classical name for River Boyne in Ireland | ||||
| 450.0 | River in Argentina. | ||||
| 58.0 | Classical name for the river Chiani in Italy | ||||
| 125.0 | Classical river in Umbria, Italy | ||||
| 112.0 | Ancient name for River Clyde in Scotland | ||||
| 94.0 | |||||
| 300.0 | River in Australia | ||||
| 249.0 | Classical name for Hron River in Slovakia | ||||
| 70.0 | Dagā River in Burma | ||||
| 816.0 | |||||
| 48.0 | Classical name for River Dee in Scotland | ||||
| 138.0 | |||||
| 131.0 | Classical river shown in Ptolemy's map; possibly Mekong River | ||||
| 150.0 | |||||
| 94.0 | Classical name for Drin River in Albania | ||||
| 37.0 | Classical name for Doubs River in France | ||||
| 32.5 | |||||
| 223.0 | Classical name for Douro River in Portugal | ||||
| 326.0 | Word for "valley" in Navajo | ||||
| 160.0 | Classical name for Allier River in France | ||||
| 357.0 | Classical name for Enipeas River in Greece | ||||
| 335.0 | |||||
| 277.0 | Classical name for Fortore River in Italy | ||||
| 750.0 | Ancient name for the Biga Çayı, a river in Turkey | ||||
| 370.0 | River in Iceland | ||||
| 475.0 | Word for "Mars" in Ancient Egyptian | ||||
| 240.2 | Havel River | ||||
| 317.0 | Ancient name for the Maritsa, a river in Greece | ||||
| 107.0 | Word for "Mars" in Egyptian Arabic | ||||
| 46.0 | Classical name for Gediz River in Turkey | ||||
| 160.0 | Classical name for Grande River in Italy | ||||
| 825.0 | Word for "Mars" in Armenian | ||||
| 92.5 | Huallaga River | ||||
| 318.0 | Word for "Mars" in Chinese:火星/huǒxīng | ||||
| 231.0 | Classical name for Kuban River in Russia | ||||
| 32.8 | Classical name for river in Sicily | ||||
| 80.2 | Classical name for Ebro River in Spain | ||||
| 307.0 | |||||
| 8.0 | Classical name for Oise River in France | ||||
| 62.0 | Ituxi River in Brazil | ||||
| 64.0 | |||||
| 1780.0 | Word for "Mars" in Japanese: かせい | ||||
| 222.0 | |||||
| 278.0 | Ladon River in Greece | ||||
| 225.0 | River Lethe in Alaska | ||||
| 219.1 | Ancient name for Lech River in Germany and Austria | ||||
| 613.0 | Ancient name for Liri River in Italy | ||||
| 102.0 | River in Ivory Coast | ||||
| 314.0 | Ancient name for river in Corsica mentioned by Ptolemy | ||||
| 720.0 | |||||
| 517.0 | |||||
| 825.0 | |||||
| 524.0 | |||||
| 1516.0 | |||||
| 1020.0 | Word for "Mars" in Oscan | ||||
| 828.0 | Word for "Mars" in Sanskrit | ||||
| 1280.0 | Word for "Mars" in Malaysian | ||||
| 3769.0 | Mariner 9 Space program | Largest known crevice in the solar system | |||
| 1185.0 | Word for "Mars" in Spanish: marte | ||||
| 51.0 | Classical name for Marne River in France | ||||
| 350.0 | |||||
| 636.0 | Word for "Mars" in Welsh: Mawrth | ||||
| 88.0 | Classical name for river in Italy | ||||
| 265.0 | |||||
| 325.0 | Morava River | ||||
| 171.0 | |||||
| 10.0 | Classical name for Mondego River in Portugal | ||||
| 494.0 | |||||
| 508.0 | Word for "planet" in Sesotho | ||||
| 87.5 | Napo River | ||||
| 17 | Named after the Neretva River in Bosnia and Herzegovina[1] [2] | ||||
| 33.0 | Classical name for Nestos River in Macedonia (Greece) | ||||
| 133.0 | Classical river name | Named used by Lowell for canal | |||
| 54.0 | Classical name for Neckar River in Germany | ||||
| 333.0 | |||||
| 496.0 | Word for "Mars" in Babylonian | ||||
| 104.0 | Classical name for Hari River in Turkmenistan | ||||
| 285.1 | |||||
| 173.0 | Ancient name for Lot River in France | ||||
| 185.0 | |||||
| 46.0 | Classical name for Po River in Italy | ||||
| 660.0 | Name used by Lowell for a canal | ||||
| 350.0 | |||||
| 153.0 | |||||
| 35.24 | "River in British Columbia and Alberta, Canada"[3] | ||||
| Pliva Vallis | 30 | Named after the Pliva River in Bosnia and Herzegovina | |||
| 260.0 | |||||
| 500.0 | |||||
| 205.5 | |||||
| 233.0 | Classical name for river in Ireland | ||||
| 945.0 | |||||
| 247.0 | Classical name for Jiu River in Romania | ||||
| 240.0 | Ancient name for Rubicon River in Italy | ||||
| 39.2 | Name proposed by Soviets | ||||
| 206.0 | Classical name for Sambre River in France and Belgium | ||||
| 237.0 | Classical name for River Severn in England | ||||
| 26.0 | |||||
| 615.0 | Ancient name for Somme River in France | ||||
| 204.0 | Ancient name for Karamenderes River in Turkey | ||||
| 20.0 | Classical name for river in Ireland | ||||
| 56.0 | |||||
| 963.0 | Word for "Mars" in Akkadian | ||||
| 140.0 | River in Russia | ||||
| 945.0 | Word for "Mars" in Sumerian | ||||
| 75.0 | Classical name for Stura di Demonte river in Italy | ||||
| 26.0 | Classical name for river in Mauritania | ||||
| 430.0 | |||||
| 95.0 | Name proposed by Soviets; found on Mars 5 map | ||||
| 570.0 | Name used by Lowell for canal | ||||
| 200.0 | Ancient name for Segura River in Spain | ||||
| 155.4 | |||||
| 56.5 | Tana River | ||||
| 12.6 | Classical name for river in Scotland | ||||
| 48.0 | Classical name for Tormes River in Spain | ||||
| 140.0 | |||||
| 118 | |||||
| 18.7 | Classical name for river in Italy | ||||
| 425.0 | Tinjar River in Malaysia | ||||
| 146.5 | |||||
| 399.0 | Ancient name for Tisza River in Hungary | ||||
| 1720.0 | Word for "Mars" in Old English: tiu | ||||
| 183.0 | Classical name for Trebbia River in Italy | ||||
| 68.0 | Classical name for Dniester River in Ukraine | ||||
| Una Vallis | 5 | Named after the Una River in Bosnia and Herzegovina | |||
| 366.0 | Dry riverbed of the Uzboy River in Turkmenistan | ||||
| 92.0 | Classical name for Var River in France | ||||
| 115.0 | Ancient name for river in Great Britain | ||||
| 95.0 | |||||
| 430.0 | |||||
| 190.0 | Vistula River in Poland | ||||
| 230.0 | Waikato River | ||||
| 24.0 | |||||
| 188.0 | |||||
| 490 |