Chiharu Sasa is a Japanese voice actor and narrator affiliated with Aoni Production, a major talent agency in Japan. He was born on May 15th and hails from Shiga Prefecture. Sasa is a graduate of the Aoni Juku Osaka school, having completed the 31st term. He holds qualifications including a Level 2 Kanji Kentei, a certification as a licensed electrician, and a standard driver's license. His listed hobbies include playing video games and karaoke, and he has a skill for mimicry. He is also a speaker of the Kansai dialect.

Sasa is widely recognized for his role as Tadano, a tech entrepreneur donkey, in the Netflix anime series Aggretsuko. He provided the Japanese voice for this character from the second season onward, as well as for related characters in the series, including Tadano's AI creation, ENI-O, and Kabae's husband. His other anime roles include a television announcer in Devilman Crybaby, a geography teacher in Planet With, a kappa in GeGeGe no Kitarō (2018), and various minor characters in series such as Baki and Levius.

Beyond anime, a significant portion of Sasa's professional work is in narration. He has provided narration for numerous television programs across major Japanese networks like NHK, Nippon TV, TBS, Fuji Television, and TV Asahi. These credits span a wide range of content, from sports programming like Paris 2024 Olympic coverage to variety shows and news segments. He also provided the Japanese voice for the character Jared in the game Elchronica and has performed in audio books and foreign film dubs.