Seth-Peribsen was an early pharaoh of Ancient Egypt who ruled sometime in the Second Dynasty of Egypt. His chronological position within this dynasty is unknown and it is disputed who ruled both before and after him. The duration of his reign is also unknown.
Seth-Peribsen's name is unusual, in that Set, not Horus, was his patron deity. This goes against the Egyptian tradition of a king choosing the falcon-shaped deity Horus as his royal patron