Iguchi Yuka (井口 裕香, First name: Yuka, Last Name: Iguchi) born July 11, 1988 in Tokyo, Japan. She is a Japanese singer and a voice actress, She is popular for her role as Index from To Aru Majutsu no Index. She belongs to Osawa Jimusho. She is often called Yukachi (ゆかち).

In 2002, she passed the audition for Gamers’ mascot character, “G.G.F.“; which Broccoli hosted. She was in charge of Sapphire role. In 2003, she formed a voice actor unit with a same name, G.G.F. and enrolled until the unit breakup on March 18, 2006. In 2003, she got her debut as a voice actor for Digi Charat Nyo! TV animation as Usada Akari. While she was enrolled G.G.F., she formed another voice actor unit along with Goto Saori named “airyth“. That time, G.G.F. was disbanded and she became a member of Osawa Jimusho since 2006. On April 2009, she was appointed as a personality (third generation assistant) for A&G Media Station Komuchatto Countdown (A&Gメディアステーション こむちゃっとカウントダウン). In 2012, She won the Personality Award in the 6th Seiyuu Award.

She is a youngest child, her family is including her father, mother, and two older sisters. She has three cats and two dogs as pets. In junior high school, she was a head of Tea Ceremony Club. In addition, in order to talk along with the situation, she often surprised her partner even in a radio program. She proclaimed herself as “Osawa Jimusho’s monomane* seiyuu”, but her monomane weren’t really resemble to the real people.