Cepheus (Ancient Greek: Κηφεύς Kepheús) may refer to:
In Greek mythology
- Cepheus (father of Andromeda), and King of Aethiopia
- Cepheus (son of Aleus), a king of Tegea, Arcadia
In astronomy
- Cepheus (constellation), one of the 88 modern constellations
- Cepheus (crater), a lunar impact crater
In Computing
- Cepheus (poker bot)
In modern fiction
- Cepheus Daidalos, a fictional character in the manga and anime, Saint Seiya
- Cepheus, the FM king in Mega Man Star Force
- In the Galaxy Railways, one of the squads is named the Cepheus Platoon.
Other uses
- USS Cepheus (AKA-18), an Andromeda class attack cargo ship