- Name: Hagiwara Mai (萩原舞)
- Nicknames: Maimai (マイマイ), Hagitty (ハギティ), Mai-chan (まいちゃん)
- Birthday: February 7, 1996
- Birthplace: Saitama, Japan
- Blood type: AB
- Height: 158cm
- Hello! Project groups:
- Little Gatas (2004–2007)
Hagiwara Mai joined Hello! Project in 2002 as a member of Hello! Project Kids after passing the group's audition. In that same year, she was a member of 4KIDS to promote Minimoni ja Movie Okashi na Daibouken! starring Minimoni. In 2005, she was one of seven members selected to form °C-ute. In 2007, she played a guest character in the anime Kirarin☆Revolution starring Kusumi Koharu. In 2009, she became a member of Petitmoni V.
In December of 2011 her Ustream show, titled "Mai Desu ga...Nani ka?", was announced.
The disbandment of °C-ute was announced on August 20, 2016 through various online and print news sources, followed closely by the official website and blogs of the members. The last performance for the group was scheduled to take place in June 2017 at Saitama Super Arena, during their 12th year of activities.
On May 27, 2017 Hagiwara Mai revealed her decision to leave the entertainment business after the disbandment of °C-ute, with the goals of traveling abroad and studying English.
Compilations / Other
- [2006.12.13] Morning Musume - 7.5 Fuyu Fuyu Morning Musume Mini! (#4 Samui Kara Fuyu da mon! ~Doumokou mo Naissu yo Mikitty~ - Fujimoto Miki with Okai Chisato, Hagiwara Mai)
- [2007.09.12] Various - Kirarin☆Revolution Song Selection 2 (#4 Koi no Mahou wa Habibi no Bi! (Hikaru Version) - Mizuki Hikaru starring Hagiwara Mai (°C-ute))
- [2009.10.10] Hagiwara Mai (萩原舞) amazon.co.jp
- [2013.08.05] Mai② (まい②)
-  Minimoni ja Movie Okashi na Daibouken! (ミニモニ。じゃム→ビ→お菓子な大冒険!)
-  Sentou no Musume!? (銭湯の娘!?)
-  Ousama Game (王様ゲーム) (as Kanazawa Miharu)
- TV Programs
- [2002–2007] Hello! Morning (ハロー! モーニング)
- [2006–2007] °C-ute has come.
- [2007–2008] Haromoni@ (ハロモニ@)
-  Berikyuu! (ベリキュー!)
- [2008–2009] Yorosen! (よろセン!)
- [2010&ndash2011] Bijo Gaku (美女学)
- [2011–2012] HELLOPRO! TIME (ハロプロ！ＴＩＭＥ)
- [2012–2013] Hello! SATOYAMA Life (ハロー！ＳＡＴＯＹＡＭＡライフ)
- [2014–] The Girls Live
-  °C-ute no Challenge TV (°C-uteのチャレンジTV)
- TV Dramas
-  Suugaku♥Joushi Gakuen (数学♥女子学園)
-  Kirarin☆Revolution (きらりん☆レボリューション) (as Mizuki Hikaru)
-  Michishige Sayumi no "Mobekimasutte Nani??" (道重さゆみの『モベキマスってなに？？』)
- [2011–2012] Mai Desu ga...Nani ka? (萩原舞ですが、、、なにか？？)
-  Sengoku Jieitai (戦国自衛隊)
-  STRONGER (ストロンガー)
-  Cat's Eye (キャッツ・アイ)
-  Sakura no Hanataba (さくらの 花束)
- [2014–] °C-ute Hagiwara Mai no All Night Nippon Mobile (°C-ute萩原舞のオールナイトニッポンモバイル)
- Radio Dramas
-  Tokai no Hitorigurashi (都会の一人暮らし)
- Her official image color is yellow. Prior to Umeda Erika's graduation in 2009, her image color was purple.
- She shares her name with a Japanese AV star, also named Hagiwara Mai (萩原舞). However, there is no relation.
- Her sister tried out for the Hello! Project Kids, but didn't make it.
- Is good friends with Okai Chisato and Mitsui Aika.
- Held the record of being the youngest member of Hello! Project for almost seven years, until Aiko joined.