Joi is an English name for girls. The meaning is `joy, happiness` The name Joi is most commonly given to American girls. What do they use in other countries? Joy (English) Joyce (English) The name sounds like: Jo, Joia Similar names are: Joni, Jobi, Joci, Jodi, Joli, Jori See also: Joye Found on https://www.pregnology.com/names/girls/Joi