Last name Tongyan (Tongyan 
, 同艳 , 同燕 ) , around the world, is a rare cognomen. The family name Tongyan is habitual in China, where it is a very rare surname, Thailand, and Philippines, where it is an extremely rare surname. More frequently, Tongyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tongyan | Brazil, China, United States, Thailand, Philippines |
| 同燕, 同艳 | China |
Тонгян, ทองยัน, 仝岩, 仝艳, 佟唁, 佟岩, 佟燕, 佟艳, 佟言, 佟讠, 同严, 同厌, 同妍, 同宴, 同岩, 同延, 同彥, 同彦, 同棪, 同殷, 同演, 同炎, 同烟, 同焉, 同焰, 同焱, 同琰, 同研, 同砚, 同衍, 同言, 同雁, 同颜, 彤妍, 彤宴, 彤岩, 彤延, 彤彦, 彤殷, 彤焰, 彤焱, 彤燕, 彤琰, 彤砚, 彤艳, 彤雁, 彤颜, 桐妍, 桐嫣, 桐岩, 桐彦, 桐檐, 桐炎, 桐燕, 桐研, 桐艳, 桐衍, 桐言, 潼妍, 潼彦, 潼燕, 潼研, 潼雁, 烔延, 童堰, 童妍, 童嬿, 童岩, 童彦, 童炎, 童焰, 童焱, 童燕, 童艳, 童言, 童雁, 童颜, 统妍, 统延, 统彦, 统殷, 统演, 统炎, 统燕, 统艳, 统衍, 统言, 通岩, 通延, 通彦, 通淹, 通燕, 通艳, 通芫, 通衍, 通言, 通雁, 铜彦, 铜炎, 铜焱, 铜燕, 铜砚, 铜艳, 铜言, and 铜颜