Bombali is a district in the Northern Province of Sierra Leone. Its capital and largest city is Makeni, which is also the largest city in the north. The Bombali district is one of the sixteen districts of Sierra Leone. Bombali is one of the largest districts in Sierra Leone by geographical area, after Koinadugu district, and is the second most populous district in the Northern part of Sierra Leone, after Port Loko district. In the 2015 Sierra Leone national census, the population of Bombali district was 606,183. Other major towns in Bombali District include Kamabai, Karina and Binkolo.
The district of Bombali occupies a total area of 7,985 km2 (3,083 sq mi) and comprises thirteen chiefdoms. The district borders Karene District to the north, Port Loko District, Tonkolili District to the south, and Koinadugu District to the east.