History: Team A

Team A is AKB48 1st team. Currently (March 2017) the team has 13 members and Yokoyama Yui is the captain.

2005

December 5 - Team A is formed with 20 girls (Original Team A): Itano Tomomi, Usami Yuki, Urano Kazumi, Ohe Tomomi, Oshima Mai, Orii Ayumi, Kawasaki Nozomi, Komatani Hitomi, Kojima Haruna, Sato Yukari, Takahashi Minami, Tojima Hana, Nakanishi Rina, Narita Risa, Hirajima Natsumi, Hoshino Michiru, Maeda Atsuko, Masuyama Kayano, Minegishi Minami and Watanabe Shiho
December 8 - Shonichi of Team A 1st Stage

January - Shinoda Mariko joined Team A
March 31 - Senshuuraku of Team A 1st Stage
March 31 - Usami Yuki graduated 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
December - Urano Kazumi, Hirajima Natsumi and Watanabe Shiho transferred to Team B

March 26 - Fujie Reina promoted
April 15 - Sato Amina promoted
April 20 - Shonichi of Team A 4th Stage's Revival
July 13 - Miyazaki Miho promoted
July 30 - Kitahara Rie promoted
October 11 - Senshuuraku of Team A 4th Stage's Revival
October 11 - Tojima Hana, Komatani Hitomi, Nakanishi Rina, Narita Risa and Ohe Tomomi graduated from AKB48
October 19
- Shonichi of Team A 5th Stage
- Nakata Chisato promoted
December 29 - Takajo Aki promoted

February 27 - Kawasaki Nozomi graduated from AKB48
April 26 - Oshima Mai graduated from AKB48
August 23 - 2009 Team Shuffle (Takahashi Team A)
- Iwasa Misaki, Ota Aika, Oya Shizuka, Katayama Haruka, Kuramochi Asuka, Kojima Haruna, Sashihara Rino, Shinoda Mariko, Suzuki Mariya, Takajo Aki, Takahashi Minami, Nakaya Sayaka, Nakagawa Haruka, Nakata Chisato, Maeda Atsuko, Maeda Ami, Matsubara Natsumi
  - Takahashi Minami chosen as the captain of the team
  - Iwasa Misaki, Oya Shizuka, Suzuki Mariya and Maeda Ami promoted
  - Ota Aika, Katayama Haruka, Kuramochi Asuka, Sashihara Rino, Nakaya Sayaka, Nakagawa Haruka and Matsubara Natsumi transferred to Team A
  - Itano Tomomi, Fujie Reina, and Minegishi Minami transferred to Team K
  - Kitahara Rie, Sato Amina and Miyazaki Miho transferred to Team B
  - Sato Yukari transferred to SDN48

June - Sashihara Rino transferred to HKT48
August 24 - Tokyo Dome Team Shuffle (Shinoda Team A)
- Shinoda Mariko chosen as captain of the Team
- Oshima Ryoka promoted
- Kotani Riho to have concurrent position in Team A
- Iriyama Anna, Iwata Karen, Izuta Rina, Kasai Tomomi, Kawaei Rina, Kikuchi Ayaka, Kobayashi Marina, Sato Sumire, Sato Natsuki, Takahashi Juri, Tano Yuka, Nakatsuka Tomomi, Nakamata Shiori, Nito Moeno, Matsui Sakiko, Morikawa Ayaka, Yokoyama Yui and Watanabe Mayu transferred to Team A
- Kuramochi Asuka, Nakata Chisato, Nakaya Sayaka, Maeda Ami and Matsubara Natsumi transferred to Team K
- Iwasa Misaki, Oya Shizuka, Katayama Haruka and Kojima Haruna transferred to Team B
- Nakagawa Haruka and Takajo Aki transferred to JKT48 (Team Kaigai)
- Ota Aika transferred to HKT48
August 27 - Maeda Atsuko graduated from AKB48
October 29 - Senshuuraku of Team A 6th Stage
November 2 - Shonichi of Team A 1st Waiting Stage
November 30 - Sato Natsuki graduated from AKB48

April 28 - (AKB48 Group Rinji Soukai)
- Nito Moeno graduated from AKB48
- Sasaki Yukari promoted
- Kotani Riho's concurrent position in Team A revoked
- Kodama Haruka, Suzuki Mariya and Yagura Fuuko to have concurrent positions in Team A
May 3 - Kasai Tomomi graduated from AKB48
June 13 - Nakatsuka Tomomi graduated from AKB48
July 22 - Shinoda Mariko graduated from AKB48
September 15 - Nakamata Shiori graduated from AKB48

February 24 - AKB48 Group Daisokaku Matsuri (Takahashi Team A)
- Takahashi Minami chosen as the captain of the Team
- Nakamura Mariko chosen as the vice-captain of the Team
- Ichikawa Manami, Tatsuya Makiho promoted
- Miyawaki Sakura to have concurrent position in Team A
- Katayama Haruka, Kojima Natsuki, Kojima Haruna , Shimazaki Haruka, Nakata Chisato, Fujita Nana, Furuhata Nao, Maeda Ami and Muto Tomu transferred to Team A
- Kodama Haruka, Tano Yuka, Suzuki Mariya and Yokoyama Yui transferred to Team K
- Izuta Rina, Oshima Ryoka, Takahashi Juri and Watanabe Mayu transferred to Team B
- Kobayashi Marina and Sasaki Yukari transferred to Team 4
- Iwata Karen transferred to Team S
- Sato Sumire transferred to Team E
- Kikuchi Ayaka transferred to Team N
- Nakanishi Chiyori transferred to AKB48 (Team A)
April 21
- Kikuchi Ayaka graduated from AKB48
- Senshuuraku of Team A 1st Waiting Stage
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