Cognomen Кадо (Kado 
, 門 
, Cadot 
) , in all the world, is a common family name. The family name Кадо is habitual in Bhutan, where it is quite a common surname, Fiji, and France, where it is quite a rare surname. In absolute terms, it is commonest in France, Nigeria, and China. Much less frequently, Кадо is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kado | Nigeria, Thailand, France, Indonesia, India |
| 門 | China |
| Cadot | Philippines, France, Canada, United States, India |
| Кадо | Russia, Ukraine |