Yokoyama Yui, 2017
|Birthdate||December 8, 1992|
|Occupation||Singer, Idol, Actress|
|Team||Team A (Captain)|
|Generation||9th Generation AKB48|
|Associated Acts||AKB48, NMB48, SDN48, SKE48, HKT48, Nogizaka46, JKT48, SNH48|
|Sub-Units||Milk Planet, Team Surprise, not yet, Balance Sentai - Veggie Rangers, Yasai Sisters, Milk Planet|
- September - Passed AKB48's 9th Generation audition and joined the group as a kenkyuusei
- November - Debuted in the theater with a performance of RIVER.
- October- Promoted from kenkyuusei to Team K.
- Ranked #15 in the 4th Senbatsu Election.
- She moved to Team A.
- She was promoted as Team A's captain after the previous one, Shinoda Mariko, graduated.
- She moved to Team A on March 26, 2015
- [09.20.2009] - AKB48 Kenkyuusei
- [10.10.2010] - Team K
- [11.02.2012] - Team A
- [11.07.2012] - Team A and Team Unknown
- [12.19.2012] - Team A and Team N
- [04.28.2013] - Team A
Senbatsu Selection Events
- AKB48 Group
- Fukuoka Dome
- Sapporo Dome
- Osaka Dome
- Nagoya Dome
- Tokyo Dome
-  - AKB48 Murder Mystery Series (Manga) (Glico's Ice no Mi CMs) (as Yokoyama Yui, FILE 4 and Online Testimony)
-  - Balance Sentai - Veggie Rangers (Kagome CMs) (as Cauliflowanger)
-  - Yasai Sisters (Kagome CMs) (replacing Ono Erena as Sister Beet)
-  NMB48 Geinin! THE MOVIE Owarai Seishun Girls!
-  Jounetsu Tairiku Yokoyama Yui Documentary
-  - Sailor Zombie
-  - NMB48 Geinin!! 2
-  - Majisuka Gakuen 2
-  - Majisuka Gakuen (cameo, final episode only)
- Hobbies: Karaoke, Strolling, Visiting Bookstores
- Favorite Colors: Purple, White, Black, Pink
- Favorite Food: Beef Rice
- Leader of Light Music Club
- Her audition song was "Blue Bird" by Ikimonogakari.
- Has a pet cockatiel.
- Attended Heart Voice Studio Music School for Middle and High School.
- Originally auditioned for SKE48's 2nd generation audition.
- Was the vocalist in a high school band.
- She is also well known for her role in Bimyo~ (Season 1) as "The Untrusting Senshi: Honmayan".
- Shares the same name (in romaji) as Team 8 member Yokoyama Yui.
- Close with Shimazaki Haruka (YuiParu).
- ↑ 2014.05.31 - Mecha×2IkeTeruh! (Fuji TV)
Captain of Team A
Captain of Team K
|Members||Iriyama Anna | Oya Shizuka | Owada Nana (Announced Graduation) | Kojima Natsuki | Kojima Haruna (Announced Graduation) | Sasaki Yukari | Shiroma Miru (NMB48 Team BII) | Takita Kayoko | Taniguchi Megu | Nakanishi Chiyori | Nakamura Mariko (Co-Captain) | Hiwatashi Yui Miyawaki Sakura (HKT48 Team KIV) | Miyazaki Miho | Yamada Nanami | Yokoyama Yui (Captain)|
|Stages||A1 | A2 | A3 | A4 | A5 | A6 | Waiting Stage | A7|