History: Team A

Team A was AKB48's 1st Team.

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

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

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

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

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

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

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

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)
- 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

February 20 - Kato Rena graduated from AKB48
March 17 - Iriyama Anna graduated from AKB48
March 21 - Furukawa Nazuna graduated from AKB48
March 30 - Nishikawa Rei graduated from AKB48
April 14 - Miyazaki Miho graduated from AKB48
April 19 - AKB48 16th Anniversary Team Shuffle (Mukaichi Team A)
- Mukaichi Mion chosen as the captain of the Team
- Okabe Rin's role as captain relinquished
- Yamane Suzuha and Taguchi Manaka transferred to Team K
- Shinozaki Ayana, Sato Minami and Suzuki Kurumi transferred to Team B
- Oguri Yui transferred concurrent position to Team B
- Shitao Miu and Yoshida Karen transferred concurrent positions to Team 4

April 2 - Okada Nana graduated from AKB48
August 1 - Shimizu Maria graduated from AKB48
August 4 - Final concert AKB48 Current Team Final Concert 2023 in KT Zepp Yokohama 〜Kore wa Team A Festival!〜 was held
August 28 - Nakanishi Chiyori graduated from AKB48
September 14 - Michieda Saki graduated from AKB48
October 17 - Team disbanded, all final members transferred to New Formation of AKB48 Regular Members