Xihu District (), literally meaning "west lake district", is one of six urban districts of the prefecture-level city of Nanchang, the capital of Jiangxi Province, China. The district was created in the Tang dynasty when a bridge was built across Nanchang's Taihu lake, dividing the area into the East and West Lake districts. It covers over 39 square kilometers and as of 2004 had a population of 460,000.
Xihu District is divided into 10 subdistricts and 1 town.