Yui Kondō is a Japanese voice actress and singer born on June 28, 1988, in Kanagawa Prefecture, Japan. She is affiliated with the talent agency Kenyu Office. Her interest in voice acting began during elementary school, and she initially planned to enter a training school after junior high. Following her parents' wishes to complete high school, she later enrolled in the voice acting department at Nihon Kogakuin College in 2007. She passed an agency audition shortly before graduating and subsequently joined Kenyu Office.

Kondō began her career in 2011 with minor roles, including a high school girl in The Idolmaster. Her first major leading role came in 2013 when she was cast as Furano Yukihira in the comedy anime My Mental Choices Are Completely Interfering with My School Romantic Comedy. That same year, she took on the role of Karen Shinomiya in The Idolmaster Million Live!, a spin-off of the popular The Idolmaster franchise. As part of this franchise, she performed on the single The Idolmaster Million Live Theater Performance 07, which reached number five on the Oricon Singles Chart.

Her filmography includes a diverse range of characters across anime and video games. In anime, she has voiced Mikoto Kiba in Triage X, Road Camelot in D.Gray-man Hallow, Rin Hashima in Cardfight!! Vanguard G, and Biwa Hayahide in Uma Musume Pretty Derby and its second season. She also played Riche Hayashi in Pon no Michi and Nagisa in To Your Eternity. In the video game field, Kondō has a recurring collaboration with the Atelier series, providing voices for Corneria in Atelier Sophie, Mana Altgalaxia in Atelier Lulua, and Tao Mongarten in Atelier Ryza: Ever Darkness & the Secret Hideout. Other notable game roles include Teuta in Bustafellows, Wattson in the Japanese version of Apex Legends, and Helia in Honkai Impact 3rd. She has also voiced Strongarm in the Japanese dub of Transformers: Robots in Disguise.