Family name Xiaoyou (孝友 
, Xiaoyou 
, 小优 ) , in all the world, is a rare cognomen. The family name Xiaoyou is characteristic of China, where it is a very rare surname, Spain, where it is an extremely rare surname, and Brazil. More prevalently, Xiaoyou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 小优, 孝友, 小悠 | China |
| Xiaoyou | China, Spain, United States, Ecuador, Brazil |
Хиаоёу, 哓优, 哓佑, 哓柚, 啸友, 啸宥, 啸游, 嘵優, 孝优, 孝佑, 孝又, 孝右, 孝尤, 孝幼, 孝忧, 孝悠, 孝有, 孝油, 孝游, 宵优, 小佑, 小侑, 小優, 小又, 小友, 小右, 小呦, 小宥, 小尤, 小幼, 小幽, 小忧, 小怣, 小懮, 小攸, 小有, 小柚, 小油, 小游, 小猷, 小由, 小莜, 小誘, 小诱, 小邮, 小酉, 小釉, 小铀, 小铕, 小鱿, 小鼬, 效友, 效尤, 效有, 晓优, 晓佑, 晓友, 晓右, 晓尤, 晓幼, 晓幽, 晓忧, 晓悠, 晓攸, 晓有, 晓柚, 晓油, 晓游, 晓猷, 晓由, 晓莜, 晓遊, 晓邮, 晓酉, 晓釉, 晓铀, 晓鼬, 校佑, 校友, 校尤, 校幼, 校有, 校由, 校铕, 消友, 潇友, 潇尤, 潇游, 潇猷, 笑优, 笑友, 笑幼, 笑游, 笑由, 筱优, 筱優, 筱友, 筱囿, 筱尤, 筱幽, 筱忧, 筱悠, 筱攸, 筱有, 筱游, 筱莜, 箫悠, 绡悠, 肖佑, 肖友, 肖尤, 肖悠, 肖有, 肖游, 萧友, 萧攸, 萧有, 萧诱, 逍游, 霄友, 霄悠, 骁友, 骁幼, and 骁猷