;2010 On July 10, 2010,
AKB48 first announced that they would be forming a second sister national group, based in Namba. NMB48 officially became active on October 9, 2010. These members made their first appearance at the
AKB48 Tokyo Autumn Festival. In its debut week, the single sold a total of about 218,000 copies, making it the bestselling single on the
Oricon weekly charts for the week of July 20–27, 2011. On September 3, Eriko Jo, a member of Team M, announced that she would be leaving the group during the performance at the theater. Her "graduation" performance was on September 28 at the NMB48 Theater. Following Jo's graduation, two members from Team M announced their resignation in early October. On October 9, three trainees were promoted to Team M to replace the members who had left. Fuuko Yagura became the new "center" member of Team M. On October 10, sixteen third-generation trainees formed Team BII. On December 19,
Yui Yokoyama was promoted to Team N. ;2013 On April 18, 2013, first-generation member Nana Yamada was transferred from Team N to Team M, and trainee members Naruma Koga and Aika Nishimura were promoted to Team N. At the AKB48 Group Concert in the Nippon Budokan on April 28, 2013, it was announced that Yui Yokoyama's concurrent position in the group would end, and that AKB48 Member
Miori Ichikawa would have a concurrent position in Team N. ;2014 In the AKB48 Group
Daisokaku Matsuri held on February 24, 2014, major changes occurred to NMB48. Sayaka Yamamoto became a concurrent member of Team K. Miyuki Watanabe became a concurrent member of Team S, and was transferred from Team N to Team BII. Mayu Ogasawara was transferred completely to Team B, Nana Yamada became a concurrent member of Team KII. On October 15, 2014, Nana Yamada announced her graduation on the group's 4th anniversary live and will graduate on April 3, 2015. ;2015 On March 31, 2015, the group released their 11th single
Don't look back!. This was Nana Yamada's first solo center, as well as her last time in a NMB48 single and senbatsu. On July 15, 2015, the group released their 12th single
Dorian Shōnen. This was Ririka Sutou's first center in senbatsu. On October 7, 2015, the group released their 13th single
Must be now. ;2016 On April 13, 2016,
Miyuki Watanabe announced her graduation from the group. On the same day
Sayaka Yamamoto announced her resignation from
AKB48's Team K. On April 27, 2016, the group released their 14th single
Amagami Hime. On August 3, 2016, they released their 15th single
Boku wa Inai. This was
Miyuki Watanabe's last center in senbatsu as well as her last single with NMB48. The music video for the A-side was shot in Thailand. On December 28, 2016, the group released their 16th single
Boku Igai no Dareka. ;2017 On December 27, 2017, the group released their 17th single
Warota People. This was the first and only single to be released in that year. ;2018 On April 4, 2018, the group released their 18th single
Yokubomono. On June 15, 2018, 6 members of NMB48 (Cocona Umeyama, Kokoro Naiki, Yuuka Kato, Miru Shiroma, Azusa Uemura and Sae Murase) joined
Produce 48. Both Cocona Umeyama and Azusa Uemura withdrew from the show. Kokoro Naiki, Yuuka Kato, Sae Murase and Miru Shiroma ranked 87, 74, 22 and 20 respectively. None of them made it to the final line-up of
Iz*One. On July 30, 2018,
Sayaka Yamamoto, captain of Team N announced in NMB48 LIVE TOUR 2018 in Summer that she would be graduating from NMB48. On September 25, 2018, the group released the music video for their 19th single
Boku Datte naichau yo, which was released on October 17, 2018. . ;2019 On February 20, 2019, the group released their 20th single
Tokonoma Seiza Musume.
Miru Shiroma is the center for this single. On August 14, 2019, the group released their 21st single
Bokou e Kaere! which was their first single to release in the
Reiwa period. On September 4, 2019,
Yuuri Ota announced her graduation. On November 6, 2019, the group released their 22nd single
Hatsukoi Shijo Shugi. ;2020 On August 19, 2020, the group released their 23rd single
Datte Datte Datte. The single originally scheduled to release on May 13, 2020, but was withdrawn at the height of
COVID-19 pandemic. ;2021 On January 1, 2021, a new project
NAMBATTLE was announced as part of an effort to revitalize the group's image, which included the disbandment of Team N, Team M and Team BII. All members were assigned to one of 6 groups, decided by lottery drawings. The winner of the project would earn the opportunity to get a new song and music video as part of NMB48's next release, as well as a new theatre stage and adjusted media appearances. ;2022 On January 1, 2022, the reformation of Team N, Team M and Team BII was announced to take effect from February. As the new Team BII is composed entirely of kenkyuusei members, they will start to be officially referred to as Team BII Kenkyuusei. On the same date, the project
NAMBATTLE 2 was also announced, which, alongside other programmes, also include a general election for NMB48 members that will be held on March 27, 2022. The winner of the event was Chihiro Kawakami with 21,462 votes, and she will subsequently be the center for NMB48's 27th single. == Members ==