Yasura Chatani is the pseudonym of a Japanese freelance voice actress primarily known for her work in adult video games and original video animations. Her real name is Kayo Nagata, and she was born on January 26, 1973, in Kanagawa Prefecture. She decided to pursue a career in voice acting after learning as a child that the same person provided the voice for both the character Doronjo from Yatterman and Nobita from Doraemon.

Before fully committing to voice acting, she obtained a nutritionist license and worked for a general company. Her career in voice acting includes work for all-age titles under her real name, Kayo Nagata. Examples of such roles include voicing female students and other characters in the game and CD drama adaptations of CROSS†CHANNEL, as well as the character Kina in Love Drops.

For her performances in adult games and their animated adaptations, she uses the name Yasura Chatani. The origin of this stage name is said to come from a type of tea labeled Yasuraka that she happened to see when she needed to choose a pseudonym. Her filmography under this name is extensive and focuses on this sector of the industry. Examples of her work in adult games include the role of Urtinia in BUNNYBLACK 2 and BUNNYBLACK 3, Saeki Rion in First Love 1/1, and Chiaki Horibe in Koimomo.

Her voice roles in original video animations, often adaptations of the games in which she performed, include the character Rui in Pleasure Commute. She is also credited with the role of Jikan in the 2016 OVA adaptation of the visual novel Trick or Alice. She is noted to have a close personal friendship with fellow voice actress Mahiru Kaneda.