The Abydos Dynasty is hypothesized to have been a short-lived local dynasty ruling over parts of Upper Egypt during the Second Intermediate Period in Ancient Egypt. The Abydos Dynasty would have been contemporaneous with the Fifteenth and Sixteenth Dynasties, from approximately 1650 to 1600 BC.
The existence of an Abydos Dynasty was first proposed by Detlef Franke and later elaborated on by Kim Ryholt in 1997. Ryholt observes that two attested kings of this period, Wepwawetemsaf (Wepwawet is his protection) and Pantjeny (He of Thinis), bore names in connection with Abydos: Wepwawet being an important Abydene god and Thinis being a prominent city a few miles north of Abydos. Additionally, Wepwawetemsaf, Pantjeny and Snaaib, another king of the period, are each known from single stelae discovered in Abydos, which could be a sign that this was their seat of power. Finally, Ryholt argues that the existence of an Abydos Dynasty would explain 16 entries of the Turin canon at the end of the 16th Dynasty. The Abydos Dynasty may have come into existence in the time lapse between the fall of the 13th Dynasty with the conquest of Memphis by the Hyksos and the southward progression of the Hyksos to Thebes.
The existence of the dynasty may have been vindicated in January 2014, when the tomb of the previously unknown pharaoh Senebkay was discovered in the southern part of Abydos, an area called "Anubis Mountain" in ancient times. If Senebkay indeed belongs to the Abydos Dynasty, his tomb might signal the royal necropolis of this dynasty, adjacent to the tombs of the Middle Kingdom rulers.