Nynetjer (Helck and Wilkinson) Nubnefer is the birth name of a king (pharaoh) who may have ruled during the 2nd Dynasty of Ancient Egypt.

The name "Nubnefer" appears on two black stone vessel fragments found in the Southern Galleries in the necropolis of king Djoser (3rd Dynasty) at Sakkara, mentioning a building called "Menti-Ankh" ("Life may endure"), which was founded during the reign of king Nynetjer.

Therefore, Egyptologists such as Peter Kaplony, Jochem Kahl and Francesco Tiradritti believe that Nubnefer's reign should be chronologically set close to that of Nynetjer.

[1][2] Egyptologists such as Battiscombe Gunn and Iorwerth Eiddon Stephen Edwards believe that the name "Nubnefer" could be the birth name of king Raneb.

In contrast egyptologists such as Wolfgang Helck and Toby Wilkinson think that Nubnefer was the immediate successor of Nynetjer.