This is a page dedicated to sub units. None of these sub units have officially debuted. These lineups are used for songs or performances in concerts, events and others activities.
- Cypher Pt. 1 (2013)
- Intro: Skool Luv Affair (2014)
- Cypher Pt. 2: Triptych (2014)
- Cypher Pt. 3: Killer (2014)
- Intro: Never Mind (2015)
- Cypher Pt. 4 (2016)
- Outro: Her (2017)
- Outro: Tear (2018)
- DDaeng (2018)
- Outro: Luv In Skool (2013)
- Outro: Propose (2014)
- Outro: Do You Think This Makes Sense? (2014)
- Outro: Love is Not Over (2015)
- Outro: House Of Cards (2015)
- Butterfly (Prologue Mix) (2016)
- House Of Cards (Full Length Edition) (2016)
- Lost (2016)
- Dimple (2017)
- The Truth Untold (2018)
The visual line is consisted of the members who are deemed the most attractive of the group. Although Jin is the official visual, V and Jungkook are considered as part of the visual line, they are called the "Visual Bermuda Triangle" or "Bermuda Line" by the k-media, netizens and armys.
Hyung is the korean word for "big brother" but is also used when a man is refering to an older man/older male friend. The hyung line consists of the older members of the group: Jin, Suga, J-Hope and RM.
Jungkook is the official maknae of BTS, as he is the overall youngest member.