Weizi may refer to:
People Weizi of Song ( 11th century BC), proper name Zi Qi, also known as Weizi, brother of Di Xin and the first ruler of Zhou's state Song Wei Zi (born 1956), Chinese actor
Places in China Weizi, Shanxi (微子), a town in Changzhi, Shanxi Weizi, Sichuan (卫子), a town in Guangyuan, Sichuan Weizi Subdistrict (围子街道), a subdistrict in Changyi, Shandong