Cognomen Yanxu (延旭 
, 艳旭 , 延续 ) , around the world, is quite a rare family name. The family name Yanxu is habitual in China, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. More frequently, Yanxu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 延续, 延旭, 艳旭 | China |
| Yanxu | China, Malaysia, United States, Ecuador, Brazil |
Янху, 严勗, 严吁, 严旭, 严绪, 俨旭, 偐旭, 妍婿, 妍序, 妍旭, 妍絮, 娫緖, 嫣煦, 宴序, 宴旭, 岩序, 岩旭, 岩栩, 岩绪, 岩许, 延序, 延徐, 延栩, 延煦, 延绪, 延胥, 延许, 延需, 延须, 彦序, 彦徐, 彦旭, 彦栩, 彦绪, 彦续, 彦胥, 彦许, 彦诩, 彦需, 彦须, 晏旭, 晏绪, 晏续, 棪栩, 殷旭, 沿序, 沿旭, 演序, 演旭, 演续, 炎垿, 炎序, 炎旭, 炎栩, 炎煦, 炎许, 炎顼, 烟需, 焱旭, 焱煦, 焱糈, 焱酗, 燕序, 燕徐, 燕旭, 燕栩, 燕煦, 燕絮, 燕续, 燕许, 燕需, 琰旭, 琰栩, 琰煦, 研恤, 研旭, 研须, 砚旭, 艳徐, 艳栩, 艳絮, 艳绪, 艳续, 艳许, 艳须, 芫旭, 衍旭, 衍煦, 衍绪, 衍续, 衍顼, 言勖, 言叙, 言序, 言徐, 言旭, 言绪, 言续, 言胥, 言许, 言须, 言顼, 谚旭, 鄢旭, 闫旭, 雁序, 雁旭, 雁栩, 顔旭, 颜徐, 颜旭, 颜栩, and 颜续