The Iwai Rebellion is a rebellion against the Yamato court that takes place in Tsukushi Province, Japan (now nearby Ogori city in Fukuoka Prefecture) in 527.

The rebellion is named after its leader, Iwai, who is believed by historians to have been a powerful governor of Tsukushi.

The rebellion is quelled by the Yamato court, and plays an important part in the consolidation of early Japan.

The main record of the rebellion can be found in the Nihon Shoki, although it is also mentioned in Kojiki and other historical sources.