Siwei

Siwei may refer to:

People

 * Cheng Siwei, Chinese economist, chemical engineer and politician
 * MaSiWei (马思唯 Siwei Ma), member of Higher Brothers
 * Zheng Siwei, Chinese badminton player

Place

 * Siwei Subdistrict, a township-level division of Jingxing Mining District, Shijiazhuang, Hebei, China
 * Sihwei village (四維村), a village in Nangan Township, Lienchiang County