Cepheus
Cepheus (Ancient Greek: Κηφεύς Kepheús) may refer to:

In Greek mythology
Cepheus (father of Andromeda), and King of Aethiopia
Cepheus (king of Tegea), the 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