Kaoru Katai, whose name is more commonly romanized as Kaoru Katakai, is a Japanese voice actress known for her extensive work in anime, video games, and foreign film dubbing. Born on April 4 in Osaka Prefecture, she is affiliated with the talent agency Kenyu Office. Her career in voice acting began in the 2000s after she graduated from the Visual Techno Academia and completed the Katou Kenichi Office Actors Classroom as a fourth-term student. Before joining Kenyu Office, she was previously associated with the talent agencies Vive and Dojinsha Production.

One of the notable voice roles credited to Kaoru Katai is the character Tora in the 2016 anime series Tama & Friends: Uchi no Tama Shirimasen ka?. Regarding the role of CoCO in the series CoCO & NiCO, no information is available in the provided search results. More broadly, as Kaoru Katakai, she is recognized for her warm and steady voice, which is frequently cast for roles depicting mothers, grandmothers, and other mature women. This has made her a familiar presence in numerous anime series. One notable example of such a role is Okaa-san, the head of the Maiko House, in the 2021 anime series Kiyo in Kyoto: From the Maiko House. Her extensive filmography includes roles in major productions such as the landlady in Pluto, Wakako in Cyberpunk: Edgerunners, an old woman in Frieren: Beyond Journey's End, and Mitsu in Demon Slayer: Kimetsu no Yaiba. Earlier in her career, she appeared in series like Shiki, Deadman Wonderland, and Hanasaku Iroha: Blossoms for Tomorrow.

Beyond anime, her voice work extends to video games and the Japanese dubbing of foreign films and television series. She has lent her voice to characters in popular games such as The Elder Scrolls V: Skyrim, Yakuza Kiwami 2, and the Lego Star Wars: The Skywalker Saga. Her dubbing work includes providing Japanese voices for characters in productions like Avatar, the Downton Abbey series, and Sex and the City. She is also known for being the official voice of Moominmamma in live shows at the Moomin Valley Park theme park. Kaoru Katakai's voice is characterized as being in the alto to mezzo-soprano range. Her personal interests include cats, knitting, and collecting teddy bears and Monchhichi dolls. She also possesses the skill of singing enka, a traditional Japanese music genre.