Serenus

Serenus may refer to:


 * Saint Serenus the Gardener (Sirenatus, Cerneuf), also known as Serenus of Sirmium
 * Saint Serenus of Alexandria (died 202 AD), Egyptian martyr
 * Serenus Sammonicus, a Roman scholar
 * Serenus of Antinoöpolis, also known as Serenus of Antinoeia, a mathematician from Antinoöpolis.
 * Serenus, a messiah claimant (circa 720)
 * Serenicus and Serenidus of Saulges