Cognomen ジョイ (Joy 
, Joi , Joyi ) , across the world, is a widespread last name. The surname ジョイ is characteristic of Nigeria, where it is a common surname, United Arab Emirates, and Bangladesh, where it is quite a common surname (explore the name in all countries). Measured by absolute frequency, it is commonest in Nigeria, Bangladesh, and India. Likewise, ジョイ is the forename as well as the last name.