Rhesus

Rhesus may refer to:


 * Rhesus of Thrace, a king in Greek mythology
 * In Greek mythology, a river-god, son of Oceanus and Tethys
 * Rhesus (play), the Ancient Greek tragedy thought to have been written by Euripides
 * Rhesus (river), a river of the Troad mentioned by Homer
 * Rhesus macaque, also known as the rhesus monkey
 * Rhesus factor, associated with a blood type, named after the monkey
 * Rh disease, also known as rhesus disease
 * 9142 Rhesus, an asteroid
 * Rhesus Glacier, Antarctica