Badung is a regency (kabupaten) of Bali, Indonesia. Its regency seat is Mangupura. It has an area of 418.52 km2 and population of 543,332 (2010 Census) and a density of 1,293.37 per square kilometer. It has undergone a population boom in the last decade, and has grown into the largest of the suburban regions of Greater Denpasar. It covers Bali's most heavy tourist regions, including Kuta, Legian, Seminyak, Jimbaran, Nusa Dua, Canggu, Uluwatu, Badung, and Mengwi. The northern part of the regency is relatively unpopulated, and the part near the coast and west of Denpasar from Jimbaran and up to Canggu is heavily populated. Ngurah Rai International Airport is located within the Regency.
On November 8, 2011 a breeding center for the endangered Bali starling was officially inaugurated in Sibang, Badung Regency inside the Green School area with initial 73 starlings. 20 of the birds came from various zoos in Europe, another 3 came from Jurong Bird Park in Singapore, and the other were already at the breeding center. If the breeding program gets success, some of them will be released into the wild, 4 of the breeding stock to Koelner Zoo and 3 to Jurong Bird Park. There were currently about 500 birds throughout Bali, 287 of them in breeding centers.