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Ryōichi Tanaka (田中 亮一, Tanaka Ryōichi, born January 26, 1947) is a Japanese actor and narrator. His late younger brother Kazumi Tanaka (田中 和実, August 11, 1951 - December 20, 2007) was also a voice actor. Tanaka is currently affiliated with Aoni Production.

He is most known for the roles of Akira Fudo (Devilman), Nobita Nobi's teacher Sensei (Doraemon), and Cancer Deathmask (Saint Seiya).^[1]

• Tiger Mask (1970) (Kentaro Takaoka/Yellow Devil)
• Akakichi no Eleven (1970) (Shingo Tamai)
• Devilman (1972) (Akira Fudo)
• Cutie Honey (1973) (Johnny) (episode 19)
• Dokaben (1976) (Fumio Ataru, Ohkawa)
• UFO Robo Grendizer (1977) (Zuril Junior)
• Doraemon (1979) (Sensei)
• Fang of the Sun Dougram (1981) (Rocky Andor)
• Kinnikuman (1983) (Warsman (First), Jesse Maivia, Mister Khamen)
• Lightspeed Electroid Albegas (1983) (Kurohara)
• Nine 2: Sweetheart Declaration (1983) (Morio)
• Ginga: Nagareboshi Gin (1986) (Kurotora, Hakuro)
• Saint Seiya (1986) (Cancer Deathmask, Musca Dio)
• Transformers: The Headmasters (1987) (Brainstorm)
• Hokuto no Ken 2 (1987) (Jo)
• Transformers: Super-God Masterforce (1988) (Lander)
• Kiteretsu Daihyakka (1988) (Shintaro)
• Himitsu no Akko-chan (1988) (Tetsu)
• Sakigake!! Otokojuku (1988) (Rankiryuu (Hikoubou))
• Transformers: Victory (1989) (Blue Bacchus)
• Chibi Maruko-chan (1990) (Headmaster)
• Kinnikuman: Scramble for the Throne (1991) (Prisman)
• Aoki Densetsu Shoot! (1993) (Ohmmori)
• Kochira Katsushika-ku Kameari Koen-mae Hashutsujo (1996) (Daidiro Ohara)
• One Piece (1999) (Moore, Minister of the Left)
• Vandread (2000) (Prime Minister)
• Koi Kaze (2004) (Zenzo Saeki)
• Saint Seiya: Soul of Gold (2015) (Cancer Deathmask)
• Tiger Mask W (2016) (Kentaro Takaoka)
• Hanma Baki - Son of Ogre (2021) (Prison Warden)

• Legend of the Galactic Heroes (1989) (Hans Eduard Bergengrun)
• Kamen Rider SD (1993) (Kamen Rider V3)

• Do It! Yasuji's Pornorama (1971)
• Mazinger Z vs. Devilman (1973) (Akira Fudo)
• Mazinger Z vs. The Great General of Darkness (1974) (Tetsuya Tsurugi)
• Dougram (1983) (Rocky)
• Doraemon: Nobita's Great Adventure into the Underworld (1984) (Sensei)
• The Dagger of Kamui (1985) (Jackal)
• Doraemon: Nobita and the Steel Troops (1986) (Sensei)
• Dragon Ball: Sleeping Princess in Devil's Castle (1987) (Demon)
• Doraemon: The Record of Nobita's Parallel Visit to the West (1988) (Sensei)
• Doraemon: Nobita and the Birth of Japan (1989) (Sensei)
• Doraemon: Nobita and the Animal Planet (1990) (Doctor)
• Doraemon: Nobita's Dorabian Nights (1991) (Merchant)
• Doraemon: Nobita and the Kingdom of Clouds (1992) (Sensei)
• Doraemon: Nobita and the Tin Labyrinth (1993) (Sensei)
• Doraemon: Nobita's Three Visionary Swordsmen (1994) (Sensei)
• 2112: The Birth of Doraemon (1995) (Mr. Robot)
• Doraemon: Nobita's Diary of the Creation of the World (1995) (Sensei)
• Doraemon: Nobita and the Galaxy Super-express (1996) (Curator)
• Doraemon: Nobita's the Night Before a Wedding (1999) (Sensei)
• Doraemon: Nobita Drifts in the Universe (1999) (Sensei)
• Doraemon: Nobita and the Legend of the Sun King (2000) (Sensei)
• Dragon Ball Z: Battle of Gods (2013) (Old Kaioushin)
• Dragon Ball Z: Resurrection 'F' (2015) (Dr. Briefs)

• Ike! Greenman (1973) (Demon Lord)
• Ike! Ushiwaka Kotarou (1974) (Kotaro Ushikawa)
• Ultraman Tiga (1996) (Gobunyu (Vaha) (ep. 19))
• Mirai Sentai Timeranger (2000) (Counselor Zektar (ep. 31))
• Hyakuju Sentai Gaoranger (2001) (Shrine Bell Org (ep. 4))
• Kamen Rider Agito (2001) (Crab Lord/Crustata Palleo (ep. 30 - 31))
• Ninpuu Sentai Hurricanger (2002) (Nightmare Ninja Yumebakushi (ep. 10))
• Tokusou Sentai Dekaranger (2004) (Tenkaolien Raja Namunan (ep. 35))

• Summon Night 2 (2001) (Frip)
• Mega Man X: Command Mission (2003) (Colonel Redips)
• Dragon Ball Z: Tenkaichi 2 (2006) (Ghost)
• Kinnikuman Muscle Grand Prix MAX (2006) (Mister Khamen)
• Kinnikuman Muscle Grand Prix 2 (2008) (Mister Khamen)
• Dragon Ball Z: Ultimate Tenkaichi (2011) (Old Supreme Kai)
• Saint Seiya: Brave Soldiers (2013) (Cancer Deathmask)

• Aliens (1989 TV Asashi edition) (Private William Hudson (Bill Paxton))
• An Officer and a Gentleman (Della Serra(Tony Plana))
• Chances Are (Richard (Marc McClure))
• Commando (1989 TV Asashi edition) (Sully (David Patrick Kelly))
• Crimson Tide (2000 TV Asashi edition) (Chief of the Boat Cobb (George Dzundza))
• JFK (1994 TV Asashi edition) (Lee Harvey Oswald (Gary Oldman))
• The Monuments Men (Pvt. Preston Savitz (Bob Balaban))^[2]
• National Lampoon's Animal House (1983 TV Asashi edition) (Lawrence "Pinto" Kroger (Tom Hulce))
• An Officer and a Gentleman (1986 Fuji TV edition) (Emiliano Della Serra (Tony Plana))
• The Omega Man (Richie (Eric Laneuville))
• Platoon (1989 TV Asahi edition) (Francis (Corey Glover))
• Red Heat (Salim (J.W. Smith))
• Taps (Cadet Major Brian Moreland (Timothy Hutton))
• Time Bandits (Vermin (Tiny Ross))
• Total Recall (Benny (Mel Johnson Jr.))

• G.I. Joe: A Real American Hero (Cobra Commander)
• SWAT Kats: The Radical Squadron (Jake Clawson/Razor)
• Thomas and Friends (Season 1–7) (Duncan/Bulstrode/Byron/The Vicar (Season 3 only)/Cyril/additional voices)
• The Transformers (Cobra Commander)
• PB&J Otter (Mayor Jeff)
• Peanuts (Schroder)
• Babar (Zephir)

• Peter Pan's Flight (Pirates Gordon)

• Official agency profile (in Japanese)
• Ryōichi Tanaka at GamePlaza-Haruka Voice Acting Database (in Japanese)
• Ryōichi Tanaka at Hitoshi Doi's Seiyuu Database (in Japanese)
• Ryōichi Tanaka at Anime News Network's encyclopedia
• Ryōichi Tanaka at IMDb
• Ryōichi Tanaka at the Japanese Movie Database (in Japanese)