The Sidama Region is a regional state in southern Ethiopia. It was formed on 18 June 2020 from the Southern Nations, Nationalities, and Peoples' Region (SNNPR) and transformation of the Sidama Zone after a 98.52% vote in favour of increased autonomy in the 2019 Sidama referendum. It is the second smallest regional state in the country, after Harari. Sidama is the name of both the Sidama people and Sidama territory. Sidama is bordered to the south by the Oromia Region (except for a short stretch in the middle where it shares a border with Gedeo zone, in South Ethiopia Regional State, on the west by the Bilate River, which separates it from Wolayita Zone, and on the north and east by the Oromia Region. Towns in Sidama include Hawassa, the capital of Sidama and of SNNPR when it existed, Yirgalem, Wondogenet, Chuko, Hula, Bona, Bursa, Bensa, and Aleta Wendo. Sidama has a population of around 3.2 million in 2017 who speak the Cushitic language Sidama.

The Southern Nations, Nationalities, and Peoples' Region was a regional state in southwestern Ethiopia. It was formed from the merger of five kililoch, called Regions 7 to 11, following the regional council elections on 21 June 1992. Its government was based in Hawassa.