Kiguchi Aya(木 口 亜矢[きぐち あや],11 October 1985- )is a popular Japanese gravure idol, race queen, singer and actress, known for her cute face and ample rear. She is currently one of the “4Tunes” Super GT Race promoters with Kikichi Asami, Marui Sayaka and Enemi Sachi. She has also been in some TV commercials, DVD’s and photobooks. She has also teamed up with fellow gravure idol Aizawa Hitomi to produce a special joint DVD for their fans.