Ryota Osaka is a Japanese voice actor from Tokushima Prefecture who is affiliated with Early Wing. He received Best Male Newcomer at 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.
| Series | Yowaki MAX Reijo Nano ni, Ratsuwan Konyakusha-sama no Kake ni Notte Shimatta | Rufus | 2026 |
| Series | From Old Country Bumpkin to Master Swordsman | Spur (voice) | 2025-04-05 |
| Series | A Star Brighter than the Sun | Yushin Izawa (voice) | 2025-10-02 |
| Series | The Witch and the Beast | Johan (voice) | 2024-01-12 |
| Series | A Sign of Affection | Kyouya Nagi (voice) | 2024-01-06 |
| Movie | HAIKYU!! The Dumpster Battle | Keiji Akaashi (voice) | 2024-02-16 |
| Series | A Condition Called Love | Keigo Kurata (voice) | 2024-04-04 |
| Series | A Terrified Teacher at Ghoul School! | Haruaki Abe (voice) | 2024-10-08 |
| Movie | Kamen Rider Gotchard Final Episode: You and Me, We've Got CHEMY×STORY - Director's Cut Version | The Sun, Apparebushido, Pilets, Stagvine (voice) | 2024-09-15 |
| Series | Magilumiere Magical Girls Inc. | Kaede Midorikawa (voice) | 2024-10-04 |
| Movie | Kamen Rider Gotchard: The Future Daybreak | The Sun (voice) | 2024-07-26 |
| Series | Code Geass: Rozé of the Recapture | Heath Lott (voice) | 2024-06-21 |
| Movie | Demon Slayer: Kimetsu no Yaiba -To the Swordsmith Village- | Gyutaro (voice) | 2023-02-03 |
| Series | The Tale of Outcasts | Snow (voice) | 2023-01-08 |
| Series | Endo and Kobayashi Live! The Latest on Tsundere Villainess Lieselotte | Artur Richter (voice) | 2023-01-07 |
| Movie | Demon Slayer: Kimetsu no Yaiba - Entertainment District Decisive Battle Arc | Gyutaro (voice) | 2023-03-01 |
| Series | The Aristocrat's Otherworldly Adventure: Serving Gods Who Go Too Far | Yuya (voice) | 2023-04-03 |
| Series | Ania Kingdom | Eddie (voice) | 2023-04-02 |
| Series | MF GHOST | Kouki Sawatari (voice) | 2023-10-02 |
| Movie | Black Clover: Sword of the Wizard King | Sekke Bronzazza (voice) | 2023-06-16 |
| Series | Berserk of Gluttony | Fate Graphite (voice) | 2023-10-05 |
| Series | Opus.COLORs | Takise Kyou (voice) | 2023-04-07 |
| Movie | Bubble | Isozaki (voice) | 2022-02-14 |
| Series | Salaryman's Club | Touya Saeki (voice) | 2022-01-30 |
| Series | Engage Kiss | Mikhail Hachisuka (voice) | 2022-07-03 |
| Movie | Toku: Touken Ranbu: Hanamaru ~Setsugetsuka~ Hana no Maki | 2022-07-08 | |
| Series | Shinobi no Ittoki | Ittoki Sakuraba (voice) | 2022-10-04 |
| Movie | Sword Art Online the Movie – Progressive – Scherzo of Deep Night | Joe (voice) | 2022-10-22 |
| Series | Love Flops | Asahi Kashiwagi (voice) | 2022-10-12 |
| Series | Farewell, My Dear Cramer | Kaoru Takei (voice) | 2021-04-04 |
| Series | The Saint's Magic Power Is Omnipotent | Oscar Dunckel (voice) | 2021-04-06 |
| Series | The Hidden Dungeon Only I Can Enter | Noir (voice) | 2021-01-08 |
| Series | Heaven's Design Team | Yokota (voice) | 2021-01-07 |
| Movie | Farewell, My Dear Cramer: First Touch | Kaoru Takei (voice) | 2021-06-11 |
| Series | Tokyo Revengers | Naoto Tachibana (voice) | 2021-04-11 |
| Series | Fena: Pirate Princess | Kaede (voice) | 2021-08-15 |
| Movie | Knights of Sidonia: Love Woven in the Stars | Nagate Tanikaze (voice) | 2021-06-04 |
| Series | Healin' Good Precure | 2020-02-02 | |
| Movie | Gundam Reconguista in G Movie II: Bellri's Fierce Charge | Klim Nick (voice) | 2020-02-21 |
| Series | Shadowverse | Ryoga Jasei (voice) | 2020-04-07 |
| Movie | Attack on Titan: Chronicle | Marco Bodt (voice) | 2020-07-17 |
| Movie | Pretty Cure Miracle Leap: A Wonderful Day with Everyone | Youta Hiramitsu (voice) | 2020-10-31 |
| Series | The Misfit of Demon King Academy | Kanon (voice) | 2020-07-04 |
| Series | We Never Learn | Yuiga Nariyuki (voice) | 2019-04-07 |
| Series | Grimms Notes: The Animation | Ex (voice) | 2019-01-11 |
| Series | Girly Air Force | Kei Narutani (voice) | 2019-01-10 |
| Movie | Kabaneri of the Iron Fortress: The Battle of Unato | Sukari (voice) | 2019-05-10 |
| Movie | Shinkansen Henkei Robo Shinkalion The Movie: The Marvelous Fast ALFA-X That Comes From the Future | Ryuji Kiyosu (voice) | 2019-12-27 |
| Movie | Gundam Reconguista in G Movie I: Go! Core Fighter | Klim Nick (voice) | 2019-11-29 |
| Movie | For Whom the Alchemist Exists | Edgar L. Leonhart (voice) | 2019-06-14 |
| Series | ORESUKI Are you the only one who loves me? | Tatsuo Shiba (voice) | 2019-10-03 |
| Series | A Certain Scientific Accelerator | Mikihiko Hishigata (voice) | 2019-07-12 |
| Series | Libra of Nil Admirari | Hisui Hoshikawa | 2018-04-08 |
| Movie | The Laws of the Universe: The Age of Reimei | Ray (voice) | 2018-10-12 |
| Series | Ulysses: Jeanne d'Arc and the Alchemist Knight | Montmorency | 2018-10-07 |
| Movie | Kuroko's Basketball the Movie: Last Game | Chihiro Mayuzumi (voice) | 2017-03-18 |
| Movie | Ao Oni The Animation | Kouji Manabe | 2017-02-11 |
| Movie | Mobile Suit Gundam Thunderbolt: Bandit Flower | 2017-11-18 | |
| Series | Akashic Records of Bastard Magic Instructor | Kristoff Fraul | 2017-04-04 |
| Movie | Kabaneri of the Iron Fortress: Life That Burns | Sukari (voice) | 2017-01-07 |
| Series | Love and Lies | Yukari Nejima | 2017-07-04 |
| Series | Classroom of the Elite | Yosuke Hirata (voice) | 2017-07-12 |
| Movie | Pokémon the Movie: I Choose You! | Cross (voice) | 2017-07-15 |
| Series | Netsuzou Trap -NTR- | Takeda (voice) | 2017-07-05 |
| Series | Tales of Zestiria the X | Mikleo (voice) | 2016-07-10 |
| Movie | PERSONA5 the Animation - THE DAY BREAKERS - | Kazuya Makigami (voice) | 2016-09-03 |
| Series | Kabaneri of the Iron Fortress | Sukari (voice) | 2016-04-08 |
| Series | Undefeated Bahamut Chronicle | Arcadia Fugil | 2016-01-11 |
| Series | Monster Hunter Stories: Ride On | Shuval (voice) | 2016-10-02 |
| Series | AOKANA: Four Rhythm Across the Blue | Hinata Masaya (voice) | 2016-01-12 |
| Movie | Code Geass: Akito the Exiled 5: To Beloved Ones | (voice) | 2016-02-06 |
| Movie | Kabaneri of the Iron Fortress: Light That Gathers | Sukari (voice) | 2016-12-31 |
| Movie | Kuroko's Basketball - Movie: Winter Cup - Crossing the Door | Chihiro Mayuzumi (voice) | 2016-12-03 |
| Series | Koro Sensei Quest! | Yuma Isogai (voice) | 2016-12-23 |
| Movie | Koro-sensei Q! | Yuma Isogai | 2016-11-19 |
| Series | Ao Oni The Blue Monster | Hiroshi | 2016-10-03 |
| Series | Trickster | Kensuke Hanasaki (voice) | 2016-10-04 |
| Series | ALL OUT!! | Mutsumi Hachiooju (voice) | 2016-10-07 |
| Movie | Assassination Classroom the Movie: 365 Days' Time | Yuma Isogai (voice) | 2016-11-19 |
| Series | Takamiya Nasuno Desu! Teekyu Spinoff | Youta Oshimoto (voice) | 2015-04-07 |
| Series | Yamada-kun and the Seven Witches | Ryū Yamada (voice) | 2015-04-12 |
| Series | Show by Rock!! | Kai (voice) | 2015-04-05 |
| Series | Assassination Classroom | Yuuma Isogai (voice) | 2015-01-10 |
| Movie | Attack on Titan: Wings of Freedom | Marco Bodt (voice) | 2015-06-27 |
| Movie | Knights of Sidonia: The Movie | Nagate Tanikaze (voice) | 2015-03-06 |
| Series | Is It Wrong to Try to Pick Up Girls in a Dungeon? | Apollo (voice) | 2015-04-04 |
| Series | Ushio and Tora | Satoru Moritsuna (voice) | 2015-07-03 |
| Series | Chivalry of a Failed Knight | Ikki Kurogane (voice) | 2015-10-03 |
| Movie | Your Lie in April: Finale Event | Ryōta Watari | 2015-12-23 |
| Movie | The Laws Of The Universe - Part 0 | Ray (voice) | 2015-09-26 |
| Series | Attack on Titan: Junior High | Marco Bodt (voice) | 2015-10-04 |
| Movie | Yankee-kun na Yamada-kun to Megane-chan to Majo | 2015-08-26 | |
| Movie | Code Geass: Akito the Exiled 4: Memories of Hatred | (voice) | 2015-07-04 |
| Series | Snow White with the Red Hair | Zen Wistaria (voice) | 2015-07-07 |
| Series | Knights of Sidonia | Nagate Tanikaze (voice) | 2014-04-11 |
| Series | Brynhildr in the Darkness | Ryouta Murakami | 2014-04-06 |
| Movie | シュガー*ソルジャー | 2014-04-04 | |
| Movie | Meisou! Underworld | Seita | 2014-04-14 |
| Series | Hamatora | Nice | 2014-01-08 |
| Series | If Her Flag Breaks | Souta Hatate | 2014-04-06 |
| Series | Glasslip | Kakeru Okikura (voice) | 2014-07-03 |
| Movie | Tales of Zestiria: The Shepherd's Advent | Mikleo (voice) | 2014-12-30 |
| Series | Argevollen | Susumu Tokimune (Main Character) | 2014-07-03 |
| Movie | Attack on Titan: Crimson Bow and Arrow | Marco Bodt (voice) | 2014-11-22 |
| Movie | Yamada-kun to 7-nin no Majo (OVA) | Ryuu Yamada (voice) | 2014-12-17 |
| Series | Your Lie in April | Ryouta Watari (voice) | 2014-10-10 |
| Series | Denki-gai | Umio | 2014-10-02 |
| Series | Gundam Reconguista in G | Klim Nick (voice) | 2014-10-02 |
| Series | Valvrave the Liberator | Haruto Tokishima (voice) | 2013-04-12 |
| Series | Attack on Titan | Man (voice) | 2013-04-07 |
| Series | Oreshura | Eita Kidou (voice) | 2013-01-06 |
| Series | Blood Lad | Blood Charlie Staz | 2013-07-08 |
| Series | The Devil Is a Part-Timer! | Sadao Maō (voice) | 2013-04-04 |
| Movie | Rescue Me! | Masayuki Mizutani | 2013-06-20 |
| Series | Ace of the Diamond | Eijun Sawamura (voice) | 2013-10-06 |
| Series | Gatchaman Crowds | Sugane Tachibana (voice) | 2013-07-13 |
| Series | Nagi-Asu: A Lull in the Sea | Kaname Isaki (voice) | 2013-10-03 |
| Series | Strike the Blood | Motoki Yaze (voice) | 2013-10-04 |
| Series | Super Seisyun Brothers | Chika Shinmoto (voice) | 2013-09-14 |
| Movie | Code Geass: Akito the Exiled 2: The Wyvern Divided | (voice) | 2013-09-14 |
| Series | Tsundere Inran Shoujo Sukumi | Yui | 2012-02-17 |
| Series | High School D×D | Vali Lucifer | 2012-01-06 |
| Series | Tsuritama | Yuki Sanada (voice) | 2012-04-13 |
| Series | OniAi | Akito Himenokoji (voice) | 2012-10-05 |
| Series | JoJo's Bizarre Adventure | Mark (voice) | 2012-10-06 |
| Series | My Little Monster | Sohei Sasahara (voice) | 2012-10-02 |
| Series | From the New World | Ryou Inaba (voice) | 2012-09-29 |
| Series | Aquarion | Sukuna (voice) | 2005-04-05 |