Naannawa Shashamane is a woreda in Oromia Region, Ethiopia. It is named after the town of Shashamene what was separated from this woreda. Part of the West Arsi Zone located in the Great Rift Valley, Shashamene is bordered on the south by the Southern Nations, Nationalities and Peoples Region, on the west by Shala, on the north by Arsi Negele, on the east by the Kore, and on the southeast by Kofele. The largest town in Shashamene is Kuyera.