What is the name of BTS's official fandom?

The name of BTS's official fandom is ARMY.

BTS selected the name A.R.M.Y. for its fan club at the group's first fan meeting in Seoul in 2014. The name is commonly explained as an acronym for “Adorable Representative M.C. for Youth,” while also evoking the idea of an army standing alongside the group. Fans generally style it as ARMY or BTS ARMY, with the plural referring collectively to the fandom.

ARMY is sometimes confused with the fandom names of other major K-pop groups. EXO fans are EXO-L, TWICE fans are ONCE, and BLACKPINK fans are BLINKs. Those names belong to different artists, so they are not alternative answers to this question.

BTS itself is short for Bangtan Sonyeondan, commonly translated as “Bulletproof Boy Scouts.” In 2017, the group also introduced “Beyond the Scene” as an expanded English branding. The group and its fandom are closely linked in BTS's public identity and charitable campaigns.