Apepi (also Ipepi; Egyptian language ipp(i)), Apophis (Greek: Ἄποφις); regnal names Nebkhepeshre, Aaqenenre and Aauserre) was a Hyksos ruler of Lower Egypt during the Fifteenth Dynasty and the end of the Second Intermediate Period.

According to the Turin Canon of Kings, he reigned over the northern portion of Egypt for forty years during the early half of the 16th century BC.

[3] Although officially only in control of the Lower Kingdom, Apepi in practice dominated the majority of Egypt during the early portion of his reign.

[4] While Apepi exerted suzerainty over and maintained peaceful trade relations with the native Theban Seventeenth Dynasty to the south, the other kingdom eventually regained control.

"[18] Jan Assmann argues that because the Ancient Egyptians could never conceive of a "lonely" god lacking personality, Seth the desert god, who was worshiped exclusively, represented a manifestation of evil;[19] and scholars generally believe the account of Apepi's alleged monotheism is a veiled condemnation of the more infamous attempt by the later pharaoh Akhenaten to elevate the status of his patron sun god, Aten.

Sumenu is nowadays identified with Mahamid Qibli, about 24 kilometers south of Thebes and there is a fragment of a stone vessel found in a Theban tomb.

A scarab bearing the prenomen of this king was discovered in Tell el-Ajjul, Gaza Strip and catalogued by Flinders Petrie in 1933.