Bali Island is part of the Lesser Sunda Islands and is 153 km long and 112 km wide, approximately 3.2 km from the island of Java. Astronomically, Bali is located at 8° 25' 23"south latitude and 115° 4' 55" east longitude, which makes it tropical like other parts of Indonesia. Situated between Java and Lombok islands.

On the Bali island lie mountains that extend from west to east, and in the mountains there are clusters of volcanoes: Mount Batur and Mount Agung, as well as non-volcanic mountains: Mount Merbuk, Mount Patas, and Mount Seraya. The existence of these mountains causes the geographic region of Bali to be divided into two (2) unequal parts, namely North Bali, with a narrow lowland and less sloping. But South Bali has extensive lowland and ramps. Bali slope consists of flat land (0–2%) covering an area of 122,652 ha, undulating land (2–15%) covering an area of 118,339 ha, steep land (15–40%) covering 190,486 ha, and an area of 132,189 ha that is very steep.

The total area of Bali Province is 5636.66 km2, or 0.29% of the total area of the Republic of Indonesia. Bali Province is administratively divided into 8 regencies, 1 city, 55 districts, and 701 villages. And there are a number of Banjars in each village.

- BADUNG Regency, capital: Mangupura

- BANGLI Regency, capital: Bangli

- BULELENG Regency, capital: Singaraja

- GIANYAR Regency, capital: Gianyar

- JEMBRANA Regency, capital: Negara

- KARANGASEM Regency, capital: Amlapura

- KLUNGKUNG Regency, capital: Semarapura

- TABANAN Regency, capital: Tabanan

- DENPASAR City, capital: Denpasar