Ryōta Ōsaka (逢坂 良太, Ōsaka Ryōta, born August 2, 1986) is a Japanese voice actor from Tokushima Prefecture, Japan. He is affiliated with Early Wing. Ōsaka is the middle child of three siblings. He played on a baseball team in elementary school and on the softball team as pitcher in secondary school. He was involved with anime while attending junior high school, but had no particular dream on acting before entering high school. After graduating from a local technical high school, Ōsaka moved to Tokyo with a friend who also wanted to be a voice actor, and studied the basics of acting for two years at Nippon Kogakuin Hachioji College. After graduating, Ōsaka attended a voice actor training school, passed the additional audition for the agency Early Wing, and made his debut in 2010.
In April 2012, Ōsaka voiced Yuki Sanada in Tsuritama. Yukio Nagasaki, who saw his performance at the audition, said he thought that he could become the face of "a new generation of male voice actors in main roles". Nagasaki's support won Ōsaka the role. At the first post-recording, he was nervous and was encouraged by his co-star Tomokazu Sugita, who told him, "We will work, so you can concentrate." He received Best Male Newcomer at the 9th Seiyu Awards in 2015. He also hosts the radio show ŌHana (逢坂市立花江学園, Ōsaka Shiritsu Hanae Gakuen) along with voice actor Natsuki Hanae. Ōsaka announced his marriage to fellow voice actress Manami Numakura on October 23, 2019. Numakura gave birth to their first child, a boy, on December 19, 2021.