Nao Sasaki is a Japanese voice actress affiliated with the agency 81produce. She was born on March 6 in Osaka Prefecture and speaks the Osaka dialect. Her personal interests include visiting bakeries and exercising with a balance ball.

Sasaki's career includes a range of supporting roles in television anime series. Her early credits include a small role in the 2016 series Orange, where she voiced students. She gained more prominent work in 2020 with roles in several productions, including the anime series The Night Beyond the Tricornered Window and Argonavis from BanG! Dream, as well as the children's series Norimonoman. In 2021, she voiced the role of Haruko Saeki in the multimedia idol project Idoly Pride. She also had a role in the 2021 animated film Fortune Favors Lady Nikuko.

Beyond anime, Sasaki's voice work extends to video games, audio books, and voice comics. Her game credits include roles in Megaton Musashi as Minori Yamaki and Kaede Hanamaki, and in Girls Reborn as Hannya, Angela Merici, and Hellhound. She has performed in audio books for works such as Jinsei and Yuusha ni Kitai shita Boku ga Baka deshita, and in a voice comic for the series Kono Ore ga, Maguro Joshi to no Sex Nanka ni Oboreru Wake ga Nai.