Starting in 1884, a series of border adjustments which moved territory from Tune to Sarpsborg took place.
On 1 January 1992 the rest of Tune, along with Skjeberg and Varteig municipalities, was incorporated into Sarpsborg.
Furthermore, a number of archaeological finds from both the Bronze Age and Iron Age, including a number of burial mounds between Tune church and the village of Greåker and noteworthy rock carving in Kalnes.
The municipality (originally the parish) was named after the old farm of Tune (Norse Túnir), since the first church was built there.
The name is the plural form of tún n 'fenced areas; country courtyards' (cognate to English "town").