JBJ or Just Be Joyful was a Korean pop project boy group signed to FAVE Entertainment and CJ E&M that consisted of 6 contestants that did not make the final cut on the Mnet TV show Produce 101 Season 2. Their name also stands for "Jeongmal Baramjikhan Johap" (정말바람직한조합; Very Desirable Union).
The group disbanded on April 30, 2018 following the expiration of contracts with FAVE Entertainment as the agencies of the respective members decided to not extend their contracts with FAVE.
- Official Fanclub: Joyful
- Official Colors: Light Slate Blue & Milan
- [2018.04.17] NEW MOON
-  Please Look Over JBJ
- [2017.11.15] 2017 Asia Artist Awards: Rising Star Award