Three BTS members had released solo mixtapes by 2023: RM, Suga, and J-Hope. They are the group’s rap-line members and each released a personal project before or during BTS’s expansion into broader solo activities.
RM released RM in 2015 and Mono in 2018. Suga released Agust D in 2016 and D-2 in 2020, using the alter ego Agust D. J-Hope released Hope World in 2018. Counting members rather than projects is important: the total is three people, even though those members had released five mixtapes between them by that point.
The number is sometimes confused with the number of solo albums, solo songs, or mixtapes themselves. BTS members had contributed individual tracks and unofficial releases before 2023, while later members also began issuing official solo albums. Those broader categories produce different totals, but for solo mixtapes specifically, the canonical 2023 count is three.