NMB48 (read “N.M.B. Forty-eight”) is an all-female Japanese theater/idol group produced by Yasushi Akimoto, one of the sister group of AKB48. The name “NMB” comes from “Namba” in the Minami district in Osaka. The group performs at NMB48 Theater on the basement of Yes-Namba Building in Namba, Osaka.
NMB48 debuted on October 9, 2010, and consisted of 26 members as Team Kenkyūsei. However one member resigned from the group due to illness. Of the remaining 25 members, 16 were promoted to Team N on March 10, 2011.