Worldwide, Soy (Soja , Soi , Soy ) is quite a common epicene forename. The forename Soy is characteristic of Macao, where it is quite a common epicene name, Nigeria, where it is quite a rare largely masculine, but uncommonly female name, and Algeria, where it is quite a rare unisex name. Not in comparison with a country's population, it most frequently occurs in Nigeria, India, and Indonesia. More prevalently, Soy is the last name as well as the forename.
|Soja||Nigeria, Poland, India, Malaysia, Indonesia|
|Soi||Nigeria, India, Myanmar, Kenya, Indonesia|
|Soy||Turkey, India, Myanmar, Kenya, Indonesia|
|Сой||Ukraine, Kazakhstan, Russia|
Soy is also a name for the fictitious and mythical characters: Soi Fon , the fictional character from Bleach.