Tabanan Regency is a regency (kabupaten) of the province of Bali, Indonesia. It has an area of 839.33 km2 and had a population of 478.390 in 2024 census. It is bordered by Badung Regency to its east, Buleleng Regency to its north and Jembrana Regency to its west, and the Indian Ocean to its south. Its regency seat is the town of Tabanan.
Tabanan is known for his Subak irrigation system which is recognized by the UNESCO since 2012. One of the popular tourism attractions located in Tabanan is the offshore rocky islet of Tanah Lot.