Suining (simplified Chinese: 遂宁; traditional Chinese: 遂寧; Sichuanese Pinyin: Xu4nin2; Sichuanese pronunciation: [ɕy˨˦nin˨˩]; pinyin: Sùiníng; Wade–Giles: Sui-ning) is a prefecture-level city of eastern Sichuan province in Southwest China.

[3] Suining is located in the center of the Sichuan Basin and on the central reaches of the Fu River, bordering Chongqing, Guang'an and Nanchong to the east, Neijiang and Ziyang to the south, the provincial capital of Chengdu to the west, and Deyang and Mianyang to the north.

While much of the prefecture is mountainous, the urban area itself, which occupies 40 square kilometres (15 sq mi), is located on flat land.

Rainfall is light in winter and can be heavy in summer, and 75% of the annual total occurs from May to September.

The percentage of land-covered forests of Suining is approximately 34%, it's the first Provincial Environmental Protection City in Sichuan.