Team 4 (チーム4) is the fouth team formed for theater-based idol group AKB48. Their team color is Yellow.
Name in bold denotes Team Captain.
- Mori Anna (Resigned September 2, 2011)
Promoted Kenkyuusei to Team 4
- Abe Maria (Promoted July 24, 2011)
- Iriyama Anna (Promoted July 24, 2011)
- Iwata Karen (Promoted March 24, 2012)
- Kato Rena (Promoted March 24, 2012)
- Kawaei Rina (Promoted March 24, 2012)
- Takahashi Juri (Promoted March 24, 2012)
- Tano Yuka (Promoted March 24, 2012)
On December 8, 2011, Oba Mina, Shimazaki Haruka, Shimada Haruka, Takeuchi Miyu, Nagao Mariya, Nakamura Mariko, Mori Anna, and Yamauchi Suzuran were promoted to full-status members from AKB48 Kenkyuusei. At the time, their status within the group was undetermined and they continued performing as Kenkyuusei. Three months later, Nakamata Shiori was given the same promotion, followed by Ichikawa Miori in late May.
During AKB48's revival performances in Tokyo Dome City Hall, it was announced that the promoted kenkyuusei were to be placed in a new team, Team 4. Details regarding their debut were to be disclosed later. During AKB48's concerts in Seibu Dome, it was announced that kenkyuusei Iriyama Anna and Abe Maria would be promoted to Team 4.
Before their debut, Oba Mina resigned due to various scandals being related to her. Mori Anna resigned at the same time due to a back injury. Team 4 made their debut with a revival of Himawarigumi 1st Stage "Boku no Taiyou" in October.