Sin-Iddinam ruled the ancient Near East city-state of Larsa from 1785 BC to 1778 BC. He was the son of Nur-Adad, with whom there may have been a short co-regency overlap.   
The annals for his 7-year reign record that he campaigned against Babylon in year 4, Ibrat and Malgium in year 5, and Eshnunna in year 6.
- ^  The Rulers of Larsa, M. Fitzgerald, Yale University Disertation, 2002
- ^ Larsa Year Names, Marcel Segrist, Andrews University Press, 1990, ISBN 0-943872-54-5
- ^ Chronology of the Larsa Dynasty, E.M. Grice , C.E. Keiser, M. Jastrow, AMS Press, 1979, ISBN 0-404-60274-6