Mashkan-shapir (modern Tell Abu Duwari, Al Qadisyah Governorate, Iraq) was an ancient tell roughly 30 kilometres (19 mi) north of Nippur and around 90 miles (140 km) southeast of Baghdad.

This time of occupation is considered to begin with the construction of the city walls by Sin-Iddinam of Larsa, known from an inscribed barrel cylinider found at the site.

The name of the great wall is “Nergal destroys the enemy lands for me.” ... At that time I strengthened the foundations of Mashkan-shapir, the sweet place ... (And when) I expanded its dwellings more than my royal predecessors (had done it before me), I excavated the canal in the midst of the city.

..."[2]The city was abandoned c. 1720 BC during the reign of Samsu-iluna, successor to Hammurabi of the First Babylonian dynasty and not re-occupied until late in the first millennium, with a 5 hectare Parthian settlement developing on the southern portion of the site.

Tell Abu Duwari was first noted, as site 639, in the Nippur survey of Robert McCormick Adams of the Oriental Institute at the University of Chicago.

[7] After visiting it in 1986 the site was excavated for a total of five months in three seasons between 1987 and 1990 by an American Schools of Oriental Research and National Geographic Society team led by Elizabeth Stone and Paul Zimansky.

Subsequently, the site has been heavily looted, especially in the central, western, and northern mounds, to the point where any further archaeological work would yield little results.