Badung Regency is a regency (kabupaten) of the province of Bali, Indonesia. Its regency seat is in the upland town of Mangupura. It covers districts to the west of the provincial capital of Denpasar, and it has a land area of 418.52 km2. It is bordered by Tabanan Regency to its west, Denpasar City, Gianyar Regency and Bangli Regency to its east and Buleleng Regency to its north, and the Indian Ocean to its south. The population of the regency in mid-2022 was 549,527.