Ishma-Dagan (𒅖𒈣𒀭𒁕𒃶, Ish-ma-Dda-gan; died c. 2154 BC) was a ruler of the city of Mari, one of the military governors known as Shakkanakku in northern Mesopotamia, in the later period of the Akkadian Empire.

[2] According to the dynastic lists, he ruled for 45 years, after Shu-Dagan, and was the third Shakkanakku ruler.

[4] He had two sons who succeeded him in turn as Shakkanakkus of Mari: Nûr-Mêr and Ishtup-Ilum.

[3] He is also known from inscriptions by his son Ishtup-Ilum mentioning his father, in dedication tablets for the building of a temple:[2] "Ishtup-Ilum, Shakkanakku of Mari, son of Ishma-Dagan, Shakkanakku of Mari, built the Temple for the "King of the country"

(Shamshi-Adad dynasty1808–1736 BCE)(Amorites)Shamshi-Adad I Ishme-Dagan I Mut-Ashkur Rimush Asinum Ashur-dugul Ashur-apla-idi Nasir-Sin Sin-namir Ipqi-Ishtar Adad-salulu Adasi (Non-dynastic usurpers1735–1701 BCE) Puzur-Sin Ashur-dugul Ashur-apla-idi Nasir-Sin Sin-namir Ipqi-Ishtar Adad-salulu Adasi (Adaside dynasty1700–722 BCE)Bel-bani Libaya Sharma-Adad I Iptar-Sin Bazaya Lullaya Shu-Ninua Sharma-Adad II Erishum III Shamshi-Adad II Ishme-Dagan II Shamshi-Adad III Ashur-nirari I Puzur-Ashur III Enlil-nasir I Nur-ili Ashur-shaduni Ashur-rabi I Ashur-nadin-ahhe I Enlil-Nasir II Ashur-nirari II Ashur-bel-nisheshu Ashur-rim-nisheshu Ashur-nadin-ahhe II Second Intermediate PeriodSixteenthDynasty of Egypt AbydosDynasty SeventeenthDynasty of Egypt (1500–1100 BCE)Kidinuid dynastyIgehalkid dynastyUntash-Napirisha Twenty-first Dynasty of EgyptSmendes Amenemnisu Psusennes I Amenemope Osorkon the Elder Siamun Psusennes II Twenty-third Dynasty of EgyptHarsiese A Takelot II Pedubast I Shoshenq VI Osorkon III Takelot III Rudamun Menkheperre Ini Twenty-fourth Dynasty of EgyptTefnakht Bakenranef (Sargonid dynasty)Tiglath-Pileser† Shalmaneser† Marduk-apla-iddina II Sargon† Sennacherib† Marduk-zakir-shumi II Marduk-apla-iddina II Bel-ibni Ashur-nadin-shumi† Nergal-ushezib Mushezib-Marduk Esarhaddon† Ashurbanipal Ashur-etil-ilani Sinsharishkun Sin-shumu-lishir Ashur-uballit II