Iwai Yukiko was born on January 13, 1972 in Chiba, Japan. She is a freelance voice actress (seiyuu) best known for her voice role as Yoshida Ayumi in Detective Conan. She was previously affiliated with Ken Production.

Kurosawa Mayu, Iwata Yuki and Aoi Hitomi is aliases Iwai Yukiko has used when working on adult games/anime.