|Birthdate||December 10, 1990|
|Birthplace||Warabi, Saitama, Japan|
|Current Age||31 Years Old|
|Social Networks||Ameblo / Instagram / Twitter|
|Idol Career Info|
|Former Team||Team A|
|Debuted||December 2008 / 7th Generation|
- 1 Catchphrase
- 2 Trivia
- 3 AKB48 Senbatsu Elections
- 4 AKB48 Janken Tournaments
- 5 Piano Albums
- 6 Team History
- 7 Singles Participation
- 8 Albums Participation
- 9 Units
- 9.1 Stage Units
- 9.2 Concert Units
- 9.2.1 Yokohama Arena 2010 'AKB48 Manseki Matsuri Kibou Sanpi Ryouron'
- 9.2.2 KYORAKU PRESENTS AKB48 SKE48 LIVE IN ASIA
- 9.2.3 AKB48 Kouhaku Utagassen 2011
- 9.2.4 Washington D.C. Concert
- 9.2.5 AKB48 Kouhaku Utagassen 2012
- 9.2.6 AKB48 2013 Manatsu no Dome Tour ~Mada mada, Yaranakya Ikenai koto ga aru~
- 9.2.7 AKB48 8th Anniversary
- 9.2.8 AKB48 Kouhaku Utagassen 2013
- 9.2.9 AKB48 Request Hour Setlist Best 200 2014
- 9.2.10 AKB48 Zenkoku Tour 2014
- 9.2.11 AKB48 Kouhaku Utagassen 2014
- 9.2.12 AKB48 x JKT48 Concert "Bergandengan Tangan Bersama Kakak"
- 9.2.13 Kojimatsuri ～Kojima Haruna Kanshasai～
- 10 Media Appearances
- 11 Gallery
- Mina-san konbanwa. Matsui Sakiko desu
- (Good evening, everyone. I'm Matsui Sakiko)
- Favorite Foods: Pasta, Strawberries
- Least Favorite Foods: Mitarashi Dango, Coffee
- Good friends with: Nonaka Misato, Suzuki Mariya
- Her original nickname was Sakippe (さきっぺ), but hardly anyone called her by it. She officially changed it to Sakiko in 2012.
- Fellow members gave her other nicknames as well. These included Sakiko-san, Sacchan, Sakiccho, Sakipo, Pokochi, Sakky, Sentanko, SAKKO-chan, and Matsuko.
- She is former member of MINT, the winner unit of the AmebaPigg Unit Battle.
- She is former member of Culture Club.
- She failed AKB48's 6th generation auditions.
- During her time as an AKB48 member she was concurrently a student specializing in piano at Tokyo College of Music. She is the only AKB48 member to attend a college of music.
- She wears contact lenses.
- She is a smell enthusiast. Her favorite smells are “the smell when you open your bedroom window before falling asleep at night” and “the smell of moist towelettes from restaurants”.
- She was one of the 50 winners of the Young Jump Gravure Competition.
- On January 10, 2011, she attended “Coming of Age Day” with Miyazawa Sae, Sato Natsuki, Katayama Haruka, Nakata Chisato, Matsubara Natsumi and Sato Amina.
- She is the PR Ambassador for her hometown, Warabi.
AKB48 Senbatsu Elections
- 1st Senbatsu Election - Not Ranked
- 2nd Senbatsu Election - Not Ranked
- 3rd Senbatsu Election - #38 (Undergirls)
- 4th Senbatsu Election - #53 (Future Girls)
- 5th Senbatsu Election - #60 (Future Girls)
- 6th Senbatsu Election - Not Ranked
- 7th Senbatsu Election - Didn't Participate
AKB48 Janken Tournaments
- 1st Janken Taikai - #15 (Lost to Kasai Tomomi)
- 2nd Janken Taikai - Round 2 (Lost to Suzuki Mariya)
- 3rd Janken Taikai - Round 2 (Lost to Nagao Mariya)
- 4th Janken Taikai - Round 1 (Lost to Miyawaki Sakura)
- 5th Janken Taikai - Round 2 (Lost to Watanabe Miyuki)
|01|| Kokyuu Suru Piano
- AKB48 Kenkyuusei → Team K → Team A → (Team K) → Graduation
- Joined AKB48 as a Kenkyuusei on December, 2008
- Promoted to Team K on August 23, 2009 (2009 Team Shuffle)
- Transferred to Team A on August 24, 2012 (Tokyo Dome Team Shuffle)
- Transferred to Team K on March 26, 2015 (AKB48 Spring Shuffle 2015)
- Graduated from AKB48 Team A on August 9, 2015 (Announcement May 29, 2015 | Graduation Stage: June 26, 2015 | Last activity: August 9, 2015 | She graduated before the team changes from the Spring Shuffle took effect, and therefore graduated as a member of Team A.)
- Anata ga Ite Kureta kara (SET LIST ~Greatest Songs~ Kanzen ban)
- Kimi to Niji to Taiyou to (Kamikyokutachi)
- Boku ni Dekiru Koto (Koko ni Ita koto)
- Koko ni Ita koto (Koko ni Ita koto)
- Iede no Yoru (1830m)
- Aozora yo Sabishikunai ka? (1830m)
- Kakushin ga Moterumono (Tsugi no Ashiato)
- Oh! Baby (Koko ga Rhodes da, Koko de tobe!)
- Tokyo Dome
- Yoyaku Shita Christmas (Piano)
- Ponytail to Shushu (Piano Intro)
- Bingo (2012)
Matsui Sakiko 6th Senbatsu Sousenkyo Poster (2014)
Matsui Sakiko (2014)
Matsui Sakiko (2013)
Matsui Sakiko (2012)
Matsui Sakiko (2011)
Matsui Sakiko (Late 2010)
Matsui Sakiko (Early 2010)
Matsui Sakiko (2009)