Sidenreng Rappang Regency (the name is often abbreviated to "Sidrap") is a landlocked regency (kabupaten) of South Sulawesi Province in Indonesia. It has an area of 1,883.23 kilometres (1,170.18 mi) and had a population of 271,911 at the 2010 Census and 319,990 at the 2020 Census; the official estimate as at mid 2025 was 338,220 (comprising 167,368 males and 170,852 females). Its capital is at the town of Pangkajene Sidenreng. The original inhabitants of this area are Bugis.

Sidenreng Rappang conducted its first direct elections for district heads on 29 October 2008.

Sidenreng Rappang originally consisted of two Bugis kingdoms, Sidenreng and Rappang. It was difficult to find the boundary between them. Often those from one community served in the other community. They speak the same language with slightly different dialects. The Sidenreng region occupies the southern position, while Rappang is in the north, and includes the geographically large but relatively less densely populated northeast, which comprises the three districts listed last in the table below - covering 1,125.19 km² (60% of the regency's area) but with just 91,078 inhabitants in 2025 (27.9% of the regency population).

Rappang Sidenreng lies at an altitude between 10 m - 1500 m from sea level. State of the topography in this area varies between a flat area covering 879.85 km² (46.72%) in the west, a hilly area of 290.17 km² (15.43%) and a mountainous area of 712.81 km² (37.85%) in the northeast. The largest northeastern district (Pitu Riase District) is very underpopulated.

Sidenreng Rappang is a center of rice production in South Sulawesi. It is mainly supported by a network of technical irrigation to irrigate rice fields throughout the year. Some of the existing irrigation network in Sidenreng Rappang include: Irrigation Fur Cenrana, irrigate 6,000 hectares of paddy When the irrigation network, irrigate 5,400 hectares of paddy Irrigation Fur Timoreng, irrigate 5,400 hectares of paddy In addition to the major producer of rice in eastern Indonesia, the area is also a major producer of chicken eggs and duck eggs outside Java. Other agricultural commodities are cocoa, copra, cashew and kemiriserta forest products such as wood and rattan.

Industrial development is concentrated on small-scale industries, medium and cottage industries ( home industry ), the main target is still limited to the share of inter- regional or inter pasaar island. The development of the industrial sector increased empowerment through education, workforce training, and creating a business climate conducive to stimulate investors to support the industrial sector, both in the field of marketing and capital.

Industrial sector as one of the economic sectors is still potential for development, which is affecting the economic sector as well as to drive the development of other sectors. Industrisebagai sector development sectors absorb considerable manpower especially Small Industrial Enterprises ( SMEs ) which could affect the development process of the region, where the leading industrial sector will grow faster.

The 75MW Sidrap Wind Farm, which opened in 2018, is Indonesia's first wind farm.