Vallis (plural Valles) is Latin for valley, vale; it may refer to the following :
Places and jurisdictions on Earth the Swiss canton Wallis Vallis (see), an ancient city, former bishopric and Latin Catholic titular see in Africa Proconsularis Vallis Vale in Somerset
Astronomy Vallis (planetary geology) Vallis Alpes on the Moon Vallis Rheita on the Moon Vallis Snellius on the Moon Valles Marineris on Mars
See also Valles (disambiguation)