Wajo Regency is a regency in South Sulawesi Province of Indonesia. It covers an area of 2,506.19 km2 and had a population of 384,694 at the 2010 Census, and 379,079 at the 2020 Census; the official estimate as of mid-2023 was 405,137. Established in 1959, Wajo Regency has its seat of government in the town of Sengkang.