Osorkon IV is a ruler of Lower Egypt who, while not always listed as a member of the Twenty-second dynasty of Egypt, is attested as the ruler of Tanis--and thereby one of Shoshenq V's successors.

Therefore he is sometimes listed as part of the dynasty, whether for convenience or in fact.

His parentage is uncertain: he could be a son of Shoshenq V. His mother, named on an electrum headpiece in the Louvre, is Tadibast III.

Kenneth Kitchen gives his reign dates as 732/30 - 716 BCE.

His reign was never recognized at Memphis where documents were dated to the reign of 24th Saite dynasty king Bakenranef.

During his time, Egypt was ruled concurrently by four dynasties - 22nd, 23rd, 24th and the 25th.

Shortly after Osorkon had ascended the throne, Upper Egypt was conquered by the Kushite king, Piankhi, and Osorkon IV ended ruling only the East Nile Delta region.