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 | Vietnam, United States, Indonesia, Nigeria, Japan |
| Toy | Vietnam, United States, Indonesia, Nigeria, Turkey |
| Toye | United Kingdom, United States, Indonesia, Nigeria, Malaysia |
| トイ | Japan |
| トイアンナ Japanese businesswoman and writer, JP |
|