Bursa Province is a province of Turkey along the Sea of Marmara coast in northwestern Anatolia. It is next to Balıkesir to the west, Kütahya to the south, Bilecik and Sakarya to the east, Kocaeli to the northeast and Yalova to the north. The province has an area of 11,043 km2 and 3,139,744 people lived there in 2021. Its traffic code is 16.
Most of the Bursa Province districts (and the city of Bursa) are in the Marmara Region, but the districts of Büyükorhan, Harmancık, Keles and Orhaneli are in the Aegean Region.
The city of Bursa was the capital of the Ottoman State between 1326 and 1365, until the Ottoman conquest of Edirne, then known as Adrianople, which became the new Ottoman capital between 1365 and 1453, until Constantinople became the final Ottoman capital.