Team A is AKB48 1st Team. Currently (September 2019) the team has 17 members and Okabe Rin is the captain.
2005
- December 5 - Team A is formed with 20 girls (Original Team A): 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 joined Team A
- March 31 - Senshuuraku of Team A 1st Stage
- March 31 - Usami Yuki graduates 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 graduates from AKB48
- February 25 - Shonichi of Team A 4th Stage
- June 25 - Hoshino Michiru graduates from AKB48
- June 26 - Senshuuraku of Team A 4th Stage
- November 30 - Masuyama Kayano graduates 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 graduates from AKB48
- April 26 - Oshima Mai graduates from AKB48
- August - Team Shuffle (Takahashi Team A)
- Takahashi Minami is choosen as captain of the Team.
- Matsubara Natsumi, Kuramochi Asuka, Oota Aika, Nakaya Sayaka, Nakagawa Haruka, Katayama Haruka and Sashihara Rino are transfered to Team A
- Fujie Reina, Itano Tomomi and Minegishi Minami are transfered to Team K
- Sato Amina, Kitahara Rie and Miyazaki Miho are transfered to Team B
- Sato Yukari transfered to SDN48
- Iwasa Misaki, Oya Shizuka, Suzuki Mariya and Maeda Ami are promoted
2010
- May 27 - Senshuuraku of Team A 5th Stage
- July 27 - Shonichi of Team A 6th Stage
2012
- June - Sashihara Rino is transferred permanently to HKT48
- August 24 - Tokyo Dome Team Shuffle (Shinoda Team A)
- Shinoda Mariko is choosen as captain of the Team
- Nakagawa Haruka and Takajo Aki are transferred to JKT48 (Team Kaigai)
- Ota Aika is transferred permanently to HKT48
- Oshima Ryoka is 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
2013
- April 28 - Nito Moeno graduates from AKB48
- Sasaki Yukari is promoted to Team A
- Kotani Riho's concurrent position in Team A revoked
- Yagura Fuuko to have concurrent position in Team A
- Kodama Haruka to have concurrent position in Team A
- Suzuki Mariya to have concurrent position in Team A
- May 3 - Kasai Tomomi graduated from AKB48
- July 21
- Shinoda Mariko graduated from AKB48
- Yokoyama Yui was appointed captain of Team A
- September 15 - Nakamata Shiori graduates from AKB48
2014
- February 24 - AKB48 Group Daisokaku Matsuri
- Takahashi Minami made Captain
- Nakamura Mariko made Co-Captain
- Ichikawa Manami (Promoted), Iriyama Anna, Katayama Haruka, Kawaei Rina, Kojima Natsuki, Kojima Haruna , Shimazaki Haruka, Takita Kayoko, Tatsuya Makiho (Promoted), Nakata Chisato, Nakanishi Chiyori (Transferred from Team H), Nishiyama Rena, Fujita Nana, Furuhata Nao (Team KII Kennin), Maeda Ami, Matsui Sakiko, Miyawaki Sakura (Team KIV Kennin), Muto Tomu, Morikawa Ayaka, Yagura Fuuko (Team M Kennin)
- April 21 - Senshuuraku of Team A 1st Waiting Stage
- Kikuchi Ayaka graduates from AKB48
- April 25 - Shonichi of Team A 5th Stage's Revival
- September 29 - Katayama Haruka graduated from AKB48
- October 3 - Taniguchi Megu and Ino Miyabi promoted
2015
- March 26 - AKB48 Spring Shuffle 2015 (Yokoyama Team A)
- Yokoyama Yui chosen as the captain of the Team
- Nakamura Mariko chosen as the vice-captain of the Team
- Furuhata Nao's and Yagura Fuuko's concurrent positions in Team A revoked
- Shiroma Miru and Yamada Nanami to have concurrent positions in Team A
- Oya Shizuka, Owada Nana, Ogasawara Mayu, Sasaki Yukari, Hirata Rina, Miyazaki Miho and Yokoyama Yui transferred to Team A
- Ichikawa Manami, Nakata Chisato, Fujita Nana, Matsui Sakiko and Muto Tomu transferred to Team K
- Tatsuya Makiho transferred to Team B
- Ino Miyabi transferred to Team 4
- April 14 - Morikawa Ayaka graduated from AKB48
- June 26 - Matsui Sakiko graduated from AKB48
- August 4 - Kawaei Rina graduated from AKB48
- August 23 - Senshuuraku of Team A 5th Stage's Revival
- December 23 - Nishiyama Rena graduated from AKB48
2016
- February 10 - Shonichi of Team A 7th Stage
- Hiwatashi Yui promoted
- March 15 - Iwata Karen graduated from AKB48
- April 8 - Takahashi Minami graduated from AKB48
- August 24 - Hirata Rina graduated from AKB48
- August 29 - Maeda Ami graduated from AKB48
- December 22 - Ogasawara Mayu graduated from AKB48
- December 26 - Shimazaki Haruka graduated from AKB48
2017
- March 18 - Owada Nana graduated from AKB48
- March 30 - Nakamura Mariko graduated from AKB48
- April 19 - Kojima Haruna graduated from AKB48
- December 8 - AKB48 Team Shuffle 2017 (Okabe Team A)
- Iriyama Anna, Okabe Rin, Okumoto Hinano, Oguri Yui, Kato Rena, Goto Moe, Shitao Miu, Shinozaki Ayana,Shimoaoki Karin, Suzuki Kurumi, Taguchi Manaka, Tanikawa Hijiri, Chiba Eri, Chou Kurena, Nishikawa Rei, Hayasaka Tsumugi, Hitomi Kotone, Maeda Ayaka, Miyazaki Miho, Mukaichi Mion, Yokoyama Yui, Yoshida Karen
- Okabe Rin choosen as the captain of the Team
- Suzuki Kurumi, Taguchi Manaka and Maeda Ayaka promoted
- Okabe Rin, Okumoto Hinano, Shitao Miu, Shimoaoki Karin, Tanikawa Hijiri, Chou Kurena, Hayasaka Tsumugi, Hitomi Kotone and Yoshida Karen to have concurrent positions
- Shiroma Miru and Miyawaki Sakura's concurrent positions revoked
- Kato Rena, Goto Moe, Shinozaki Ayana, Chiba Eri, Nishikawa Rei and Mukaichi Mion transferred to Team A
- Yamada Nanami transferred to Team K
- Oya Shizuka, Kojima Natsuki, Sasaki Yukari, Takita Kayoko, Taniguchi Megu, Nakanishi Chiyori and Hiwatashi Yui transferred to Team B
- Iriyama Anna, Okabe Rin, Okumoto Hinano, Oguri Yui, Kato Rena, Goto Moe, Shitao Miu, Shinozaki Ayana,Shimoaoki Karin, Suzuki Kurumi, Taguchi Manaka, Tanikawa Hijiri, Chiba Eri, Chou Kurena, Nishikawa Rei, Hayasaka Tsumugi, Hitomi Kotone, Maeda Ayaka, Miyazaki Miho, Mukaichi Mion, Yokoyama Yui, Yoshida Karen
2018
- April 29 - Hayasaka Tsumugi graduated from AKB48
- August 10 - Shimoaoki Karin graduated from AKB48
2019
- February 2 - Cho Kurena graduated from AKB48
- May 21 - Hitomi Kotone graduated from AKB48
- May 31 - Tanikawa Hijiri graduated from AKB48
- August 13 - Goto Moe graduated from AKB48
- September 12 - Sato Minami and Michieda Saki promoted