Last name Джои (Joey 
, Joi 
, Джои) , in the entire world, is a common family name. The cognomen Джои is habitual in Hong Kong, where it is quite a common surname, Macao, where it is quite a rare surname, and Singapore. Measured by absolute frequency, it is the most numerous in Indonesia, Malaysia, and India. Much more frequently, Джои is the forename as well as the last name.