Xiao
Xiao may refer to:

Filial piety (Chinese: 孝; pinyin: Xiào), or "being good to parents", a virtue in Chinese culture
Xiao (flute) (Chinese: 箫), a Chinese end-blown flute
Xiao (rank) (Chinese: 校), a rank used for field officers in the Chinese military
Xiao County (Chinese: 萧县), in Anhui, China
Xiao Mountain (Chinese: 崤山), a range of mountains in Henan, China, or the surrounding Xiao region
Xiao River (Chinese: 潇水), a tributary of the Xiang River, in Hunan, China
Xiao (mythology) (Chinese: 嚣), certain legendary creatures in Chinese mythology
Ling Xiaoyu, a character from the Tekken video game series, also known as Xiao

People
Xiao (surname), a Chinese surname sometimes also romanized as Hsiao, Siaw, Siew, Siow, Seow, Siu or Sui
Xiao (Galician name), Galician name for Julian, from Galician-Portuguese Gião.
Duke Xiao of Qin, Chinese ruler of the state of Qin
Prince Xiao of Liang, the posthumous title of Liu Wu, younger brother of the Han emperor Jing
Empress Dowager Xiaozhuang (1613–1688), empress dowager of the Qing Dynasty
Xiao Guodong (born 1989), Chinese professional snooker player
Xiao He, first chancellor of the Han Dynasty
Xiao Hong (1911–1942), Chinese writer
Xiao Hua Gong, Chinese-Canadian businessman and politician
Xiao Jianhua (born c. 1972), Chinese-Canadian businessman
Xiao Qian (1910–1999), Chinese essayist
Xiao Qiang, Chinese human rights activist
Xiao Qiao, the younger of the Qiao sisters
Xiao Zhan (born 1991), a member of C-pop group XNINE and a Chinese actor
Xiao De Jun (Xiao Jun) (born 1999), a member of C-Pop group WayV

Other
Xiao Xiao, cartoons by Zhu Zhiqiang
Xiao Jing, the Chinese name of the Classic of Filial Piety
Xiao (Chinese: 魈), A fictional character in the game Genshin Impact