Family name トイ (Toi 
, Toy 
, Toye 
) , in all the world, is a common cognomen. The cognomen トイ is characteristic of Turkey, where it is quite a common surname, Antigua and Barbuda, and Macao, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in Turkey, the United States, and Nigeria. Also, トイ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Toi | Indonesia, Japan, Vietnam, United States, Nigeria |
| Toy | Indonesia, Vietnam, Turkey, United States, Nigeria |
| Toye | Indonesia, United Kingdom, Malaysia, United States, Nigeria |
| トイ | Japan |
| トイアンナ Japanese businesswoman and writer, JP |
|