Ayaka Ōhashi is a Japanese voice actress and singer from Tokyo, born on September 13, 1994. She is affiliated with the talent agency HoriPro International and signed to the record label Lantis for her music career. Her path to voice acting began in childhood as a member of a theater company, where she appeared in commercials, dramas, and educational programs. It was during this time that voice acting lessons with her troupe inspired her to pursue the profession. In 2011, she was a finalist in the 36th Horipro Talent Scout Campaign, which led to her joining Horipro and making her voice acting debut the following year.

Ōhashi's first main role came in 2012 as Fleur Blanc in the anime Eureka Seven AO. That same year, she was cast as Uzuki Shimamura in the mobile game The Idolmaster Cinderella Girls, a character she would reprise across various anime adaptations and establish as one of her most significant roles. Her career includes a wide range of notable characters. She is known for her work as Ran Shibuki in the long-running Aikatsu! franchise, Kurome in Akame ga Kill!, and Aki Adagaki in Masamune-kun's Revenge. A major recurring role is Sāya Yamabuki, the drummer of the band Poppin'Party, in the BanG Dream! multimedia franchise. For this role, she performs as a member of the real-life band, utilizing drumming skills she had prior to the role. Her other franchise work includes Vodka in Umamusume: Pretty Derby, Hatsune Kashiwazaki in Princess Connect! Re:Dive, and Serika Kuromi in Blue Archive the Animation. In the upcoming 2026 series The Demon King's Daughter Is Too Kind!!, she voices the character Jahi.

In addition to acting, Ōhashi has a concurrent career as a singer. She made her solo debut in 2014 performing the opening theme song YES!! for the anime Sabagebu! -Survival Game Club!-, in which she also starred as the main character. Her first album, Kidō ~Start Up!, was released in 2016. Throughout her career, she has frequently performed theme songs for the anime series in which she appears. Notable examples include the opening themes for Masamune-kun's Revenge and Knight's & Magic, as well as numerous insert and theme songs for the BanG Dream! and The Idolmaster Cinderella Girls franchises. Her work is defined by strong ties to major multimedia franchises and a recurring role in a performance-based band, showcasing her versatility as both a voice artist and musical performer.