Communis may refer to:

• Anulus tendineus communis or annulus of Zinn, a ring of fibrous tissue surrounding the optic nerve
• Carotis communis, the common carotid artery
• Extensor digitorum communis, a muscle of the posterior forearm present in humans

• Canis lupus communis, the Russian wolf, a subspecies of the grey wolf occurring in north-central Russia
• Communis opinio, a Latin phrase referring to "common opinion," or "the generally accepted view"
• Doctor Communis, a term for Saint Thomas Aquinas (ca. 1225-1274), an Italian priest of the Roman Catholic Church
• Fratres Communis Vitae, a Roman Catholic religious community founded in the 14th century
• Res communis, the public domain
• Sensus communis, the part of the psyche responsible for binding the inputs of the individual sense organs

• Commune (disambiguation)
• Vulgaris (disambiguation), another Latin adjective with the same meaning.