Name: Michishige Sayumi (道重さゆみ)

| Nicknames: Sayumin (さゆみん), Shige-san (しげさん), Sayu (さゆ), Sayu-chan, Shige-pink
| Birthdate: July 13, 1989
| Birthplace: Ube, Yamaguchi Prefecture, Japan
| Blood type: A
| Height: 160.1 cm (5′3″)
| Hobbies: Phone, sleeping everywhere, Tetris
| Special skill: Tetris
| Favorite color: Pink, black
| Favorite sports: Tennis
| Favorite movie: Titanic
| Favorite flowers: Red freesias
| Favorite word: “Tensai” (天才 – “Genius”)
| Favorite season: Summer, winter
| Favorite food: Chocolate and spaghetti
| Disliked food: Avocado
| Favorite song: Go Girl ~Koi no Victory~
| Hello! Project Groups: Morning Musume (2003–), EcoMoni (2004–)
| Subgroups: Morning Musume Otome Gumi (2003–2004)
| Concert Units: Hello! Project Akagumi (2005), Wonderful Hearts (2006–)
| Shuffle Units: 2004: H.P. All Stars
| Other: Metro Rabbits H.P. (2006–)

Sayumi Michishige (道重 さゆみ, Michishige Sayumi, (named after Sayumi Horie) and born July 13, 1989 in Ube, Yamaguchi Prefecture, Japan) is a sixth generation member of the J-pop group Morning Musume.