Ayato Morinaga is a Japanese voice actor and stage actor affiliated with the talent agency Mausu Promotion. He was born on February 8 in Aichi Prefecture and speaks the Nagoya dialect.

Morinaga began his entertainment career in 2017, initially affiliated with the agency Crazy Box. He left Crazy Box at the end of March 2020 and joined Mausu Promotion the following day on April 1, 2020. He is a graduate of the Japan Narration Acting Institute.

In the world of anime, Morinaga is known for the role of Ayato Imazono in the series Futsal Boys!!!!!. He also voiced the supporting role of Kazuki Sato in the 2024 romantic comedy series Maarui Kanojo to Zannen na Kareshi. His other anime credits include minor roles in a wide range of productions, such as Tomodachi Game, Shikimori's Not Just a Cutie, The Idolm@ster Cinderella Girls U149, Kuma Kuma Kuma Bear Punch!, Solo Leveling, and Unnamed Memory.

Beyond anime, Morinaga has contributed his voice to several video games. His game credits include roles in Fire Emblem Warriors: Three Hopes, Black Desert Mobile, and the Japanese version of the game Afterimage. He has also performed in stage productions, notably appearing in the stage play adaptation of Haikyuu!! as Kazuma Bohata.

A distinctive aspect of Morinaga's public persona is his athletic background and his self-proclaimed title of "Japan's most athletic voice actor". Before focusing on his voice acting career, he was an avid motocross racer and held a national Class B license from the All Japan Motorcycle Federation. He competed riding a Yamaha YZ250F and achieved a jump distance of approximately 40 meters. He retired from competitive motocross in 2017 due to a right wrist injury sustained during a race in Hiroshima. His other athletic interests include acrobatics, such as performing backflips, as well as bouldering and human beatboxing.