Akshak
| 𒌔𒆠 | |
| Location | Uncertain; somewhere in the Diyala Governorate of the Republic of Iraq | 
|---|---|
| Region | Mesopotamia | 
| Coordinates | 33°5′40″N 44°31′20″E / 33.09444°N 44.52222°E | 
| Type | City | 
| History | |
| Founded | c. 2900 BC | 
| Abandoned | c. 1595 BC | 
| Periods | Early Dynastic I, II, and III, Akkadian, Ur III, Isin-Larsa, Old Babylonian | 
| Cultures | Sumer | 
| Associated with | Sumerians | 
| Site notes | |
| Condition | Lost city | 
Akshak (Sumerian: 𒌔𒆠, akšak) (pre-Sargonic - u4kúsu.KI, Ur III - akúsu.KI, Phonetic - ak-su-wa-ak) was a city of ancient Sumer, situated on the northern boundary of Akkad, sometimes identified with Babylonian Upi (Greek Opis). It is known, based on an inscription "‘Ur-kisala, the sangu-priest of Sin of Akshak, son of Na-ti, pasisu-priest of Sin to Salam presented [this statue]." that there was a temple of the god Sin in Akshak.