Xianyu may refer to:
Xianyu people, a Beidi tribe in northern China during the Zhou dynasty Xianyu (state), a minor state in northern China during the Zhou dynasty Zhongshan (state), usually considered a continuation of the earlier Xianyu Kingdom Xianyukou (鲜鱼口), a street name of Hutong located at downtown of Beijing, meaning crossing of Xianyu Xianyu, Dingxing County (贤寓镇), a town in Dingxing County, Hebei, China Xianyu, Zhuzhou (仙庾镇), a town in Hetang District, Zhuzhou, Hunan, China Xianyu, Shitai County (仙寓镇), a town in Shitai County, Anhui, China Xianyu (surname) (鮮于), a Chinese compound surname listed in the Hundred Family Surnames Xianyu (闲鱼, Goofish), a classified ads and online shopping app in China for buying and selling used goods, part of Alibaba Group