History: Team A
Team A is AKB48 1st Team. Currently (December 2012) the Team have 21 members and Shinoda Mariko is the captain.
2005
- December 5 - Team A is formed with 20 girls: Itano Tomomi, Kawasaki Nozomi, Kojima Haruna, Komatani Hitomi, Maeda Atsuko, Masuyama Kayano, Minegishi Minami, Nakanishi Rina, Narita Risa, Ohe Tomomi, Oshima Mai, Sato Yukari, Takahashi Minami, Tojima Hana, Usami Yuki, Orii Ayumi, Hoshino Michiru, Urano Kazumi, Watanabe Shiho, and Hirajima Natsumi
- December 8 - Shonichi of Team A 1st Stage
2006
- January - Shinoda Mariko join Team A
- March 31 - Senshuuraku of Team A 1st Stage
- March 31 - Usami Yuki graduate from AKB48
- April 15 - Shonichi of Team A 2nd Stage
- August 11 - Senshuuraku of Team A 2nd Stage
- August 20 - Shonichi of Team A 3rd Stage
2007
- January 25 - Senshuuraku of Team A 3rd Stage
- January 25 - Orii Ayumi graduate from AKB48
- February 25 - Shonichi of Team A 4th Stage
- June 25 - Hoshino Michiru graduate from AKB48
- June 26 - Senshuuraku of Team A 4th Stage
- November 30 - Masuyama Kayano graduate from AKB48
2008
- April 20 - Revival of Team A 4th Stage
- October 10 - Senshuuraku of Team A 4th Stage's Revival
- October 19 - Senshuuraku of Team A 5th Stage
- November 23 - Tojima Hana, Komatani Hitomi, Nakanishi Rina, Narita Risa and Ohe Tomomi graduate from AKB48
2009
- February 27 - Kawasaki Nozomi graduate from AKB48
- April 26 - Oshima Mai graduate from AKB48
- August - Team Shuffle
- Takahashi Minami choosen as captain of the Team.
- Matsubara Natsumi, Kuramochi Asuka, Oota Aika, Nakaya Sayaka, Nakagawa Haruka, Katayama Haruka and Sashihara Rino transfered to Team A
- Fujie Reina, Itano Tomomi and Minegishi Minami transfered to Team K
- Sato Amina, Kitahara Rie and Miyazaki Miho transfered to Team B
- Sato Yukari transfered to SDN48
- Iwasa Misaki, Oya Shizuka, Suzuki Mariya and Maeda Ami promoted
2010
- May 27 - Senshuuraku of Team A 5th Stage
- July 27 - Shonichi of Team A 6th Stage
2012
- June - Sashihara Rino transferred permanently to HKT48
- August 24 - Tokyo Dome Team Shuffle
- Shinoda Mariko choosen as captain of the Team
- Nakagawa Hiromi and Takajo Aki transferred to JKT48 (Transferred Members)
- Ota Aika transferred permanently to HKT48
- Oshima Ryoka promoted
- Kotani Riho concurrently joined Team A
- August 27 - Maeda Atsuko graduate from AKB48
- October 29 - Senshuuraku of Team A 6th Stage
- November 2 - Shonichi of Team A 1st Waiting Stage
- November 30 - Sato Natsuki graduate from AKB48
- Undecided - Kasai Tomomi graduate from AKB48
