| Sakiko Matsui | |
| Native Name: | 松井 咲子 |
| Birth Date: | 10 December 1990 |
| Origin: | Warabi, Saitama Prefecture, Japan |
| Years Active: | 2009–present |
| Associated Acts: | AKB48 |
is a Japanese singer and pianist. She was a member of AKB48. Concurrently as a student specializing in piano at Tokyo College of Music, she has released a piano instrumental album Kokyū Suru Piano on October 3, 2012, which reached number 10 on Oricon's albums chart.[1] [2] __TOC__
| Year | data-sort-type="number" | No. | Title < | --- title of A-side single ----> | Role[3] | Notes and additional tracks performed < | --- add other tracks that she participated in, references ----> |
|---|---|---|---|---|---|---|---|
| 2009 | |||||||
| 14 | "River" | B-side | "Hikōkigumo" | ||||
| 2010 | 16 | "Ponytail to Shushu" | B-side | "Boku no Yell" | |||
| 18 | "Beginner" | B-sides | "Boku Dake no Value" and "Kimi ni Tsuite" | ||||
| 19 | "Chance no Junban" | A-side | |||||
| 2011 | 20 | "Sakura no Ki ni Narō" | B-sides | "Kiss Made 100 Mile" | |||
| 21 | "Everyday, Katyusha" | B-side | "Hito no Chikara" (as Under Girls) | ||||
| 22 | "Flying Get" | Under Girls | "Dakishimecha Ikenai" | ||||
| 23 | "Kaze wa Fuiteiru" | Under Girls Yurigumi | "Gondola Lift" | ||||
| 24 | "Ue kara Mariko" | B-side | "Zero-sum Taiyō" | ||||
| 2012 | 25 | "Give Me Five!" | Special Girls B | "Hitsujikai no Tabi" | |||
| 26 | "Manatsu no Sounds Good!" | B-side | "Gugutasu no Sora" | ||||
| 27 | "Gingham Check" | Future Girls | "Show Fight!" | ||||
| 28 | "Uza" | B-side | "Kodoku na Hoshizora" | ||||
| 29 | "Eien Pressure" | B-side | "Watashitachi no Reason" | ||||
| 2013 | 30 | "So Long!" | B-side | "Ruby" (as Team A) | |||
| 31 | "Sayonara Crawl" | Team A | "Ikiru Koto" | ||||
| 32 | "Koisuru Fortune Cookie" | Future Girls | "Suitei Marmalade" | ||||
| 33 | "Heart Electric" | Team A | "Kisu made Countdown" | ||||
| 2014 | 35 | "Mae shika Mukanee" | Team A | "Koi to ka" | |||
| 36 | "Labrador Retriever (song)" | B-side | "Kimi wa Kimagure" (as Team A) | ||||
| 38 | "Kibouteki Refrain" | B-sides | "Juujun na Slave" (as Team A) & "Reborn" (as Team Surprise) | ||||
On December 5, 2023, Matsui and comedian Kohei Ueda jointly announced through their respective social media accounts that they had registered their marriage on December 3.[5]