Jembrana Regency is a regency in the southwest of Bali, Indonesia. It has an area of 841.8 km and had a population of 329,353 in 2024. It is bordered by Tabanan Regency to its east, Buleleng Regency to its east and north, and the Bali Strait to its west and the Indian Ocean to its south. Its regency seat is the town of Negara.