Kyōko Sakai is a Japanese voice actress and actress known for her versatile performances across anime, video games, and foreign film dubbing. She was born on January 6, 1981, in Kyoto Prefecture, and is affiliated with the talent agency Office PAC. One source indicates a change in affiliation, noting a move to Ōsawa Jimusho in March 2025.

Sakai began her professional career in the early 2000s, with her debut anime role being a flight attendant in Cobra The Animation. Her early work included minor roles in series such as The Tatami Galaxy, A Channel, and Tiger & Bunny. She is recognized for her supporting roles in popular anime, including Mari Katsuki in Yuri!!! on Ice and Kasumi Shino in Love Stage!!. Other notable anime credits include roles in Sazae-san, Sword Dynasty, and YU-NO.

Beyond anime, Sakai has an extensive career dubbing foreign films and television series into Japanese. She is the regular Japanese voice for several international actresses, including Laura Carmichael as Edith Crawley in Downton Abbey, Willa Holland as Thea Queen in Arrow, Elsa Pataky in the Fast & Furious franchise, and Candice Accola in The Vampire Diaries. Her video game work includes roles in prominent titles such as Ace Attorney 5, Kingdom Hearts III, Final Fantasy XV, and War of the Visions: Final Fantasy Brave Exvius.

Sakai has also performed in stage productions, having been a member of the theater troupe Gekidan Yojohan. Her skills include a third-degree black belt in kyudo, a Japanese martial art of archery, and she also enjoys playing basketball.