Osmangazi is a municipality and district of Bursa Province, Turkey. Its area is 621 km2, and its population is 891,250 (2022). It is one of the central metropolitan districts of the city of Bursa, as well as the fourth largest overall municipality in Turkey. On its own, it would be the 28th largest city in Turkey.

Bursa, historically known as Prusa, is a city in northwestern Turkey and the administrative center of Bursa Province. The fourth-most populous city in Turkey and second-most populous in the Marmara Region, Bursa is one of the industrial centers of the country. Most of Turkey's automotive production takes place in Bursa. As of 2019, the Metropolitan Province was home to 3,056,120 inhabitants, 2,161,990 of whom lived in the 3 city urban districts plus Gürsu and Kestel.