Sayaka Isoyama is a Japanese gravure idol.

* Name: Isoyama Sayaka (磯山さやか)
* Nickname: Isocchi (いそっち)
* Birthdate: October 23th, 1983
* Birthplace: Ibaraki Hokota
* Blood type: A
* Height: 155cm
* Bust: 91cm (F cup)
* Waist: 60cm
* Hips: 87cm
* Shoe size: 24cm
* Hobbies: Karaoke, watching high school baseball games, learning about idols
* Abilities: Baton, trumpet, rollerblading, sign language, spinning plates
* Favorite celebrities: Matsuda Seiko, Fujiwara Norika
* Favorite TV show: Gakkou e Ikou
* Favorite movie: Shakespeare in Love
* Favorite authors: Aida Mitsuwo, Fujiwara Norika (Fujiwara Shugi)
* Favorite food: Anything with vinegar
* Talent Agency: HORI AGENCY