Nao Ojika is a Japanese voice actress known for her work in anime and video games. She is a female performer with a birthday of August 9. She hails from Aichi Prefecture and is affiliated with the talent agency I'm Enterprise.

Ojika began her professional voice acting career in 2021. Early credits included minor roles in series such as SSSS.DYNAZENON, Blue Period, and Life Lessons with Uramichi Oniisan. As her career progressed, she took on more substantial parts, such as Kana Satoyama in Mou Ippon! and a young Yuuya Tenjou in I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too. Her other anime appearances include roles in The Dangers in My Heart, Akuyaku Reijou Level 99, and Ishura.

In 2026, Ojika was cast in two notable roles. She voices Kaede Saionji in the series Ghost Concert: missing Songs, which premiered in April 2026. That same month, she also began voicing Rui Nonoyama, as well as her magical alter ego MashuLulu, in the series Magical Sisters Lulutto Lilly. In the latter series, her character is a gentle middle school girl who becomes hesitant after a childhood hospitalization, and Ojika has expressed her focus on bringing out the character's charm through song.

Outside of anime, one of Ojika's most prominent roles is as Temari Tsukimura in the video game Gakuen Idolmaster, where her character songs and performance have gained a following. Her additional video game work includes voicing Ain in Goddess of Victory: Nikke, Zora in Dislyte, and characters in Granblue Fantasy and Kemono Friends 3.