The 2005 Tentena market bombings occurred on 28 May 2005 in Tentena, Central Sulawesi, Indonesia. Two improvised explosive devices, set to explode 15 minutes apart, detonated during the morning at a market in the center of Tentena, killing 22 and wounding at least 40 more. The fatalities included a Christian clergyman and a 3-year-old boy.

The first device detonated at around 8:15 a.m. and witnesses observed many of the victims who had come to help those injured in the first blast were killed by the second, larger explosion that left a 3-foot-deep crater. The blasts flattened food stands and also damaged a bank, a Christian church and a police station in central Tentena town. The Poso district police chief announced another, unexploded bomb was later discovered outside a nearby church.