Kōichi Yamadera

adalah seorang pengisi suara, pemeran, tarento, dan pembawa acara Jepang. Ia lulusan Jurusan Ekonomi Universitas Tohoku Gakuin, dan berada di bawah manajemen artis Across Entertainment (sebelumnya di Tokyo Actor's Consumer's Cooperative Society. Pada tahun 2012, ia menikah dengan pengisi suara bernama Rie Tanaka (sebelumnya dengan pengisi suara bernama Mika Kanai, 1993-2006). Ia juga mengisi suara Donal Bebek versi bahasa Jepang dalam permainan *[[Kingdom Hearts]]* dan *[[Kingdom Hearts II]]*. Yamadera juga merupakan pengisi suara dalam dubbing Jepang Will Smith dan Jim Carrey.

## Filmografi
### Film animasi di televisi

* Oh My Goddess! (Troubador)
* Soreike! Anpanman (Cheese, Kamameshidon)
* Agatha Christie's Great Detectives Poirot and Marple (Gale)
* Cowboy Bebop (Spike Spiegel, Ein)
* Kyattou Ninden Teyandee (Karamaru)
* Galaxy Angel (Colonel Hari)
* Ghost in the Shell: Stand Alone Complex (Togusa, Aoi, Baby Ruth)
* Ghost in the Shell: S.A.C. 2nd GIG (Togusa)
* Samurai Champloo (Sakonshougen Nagamitsu)
* Neon Genesis Evangelion (Ryoji Kaji)
* Fist of the Blue Sky (Kenshirō Kasumi)
* Special Duty Combat Unit Shinesman (Shogo Yamadera / Shinesman Gray)
* Xenosaga (Gaignun Kukai, Albedo Piazzola)
* UFO Baby (Yuzupiko)
* Dokkiri Doctor (Doctor Haruka Nishikikōji)
* Dragon Ball Z (Tenshinhan, pengganti bagi Hirotaka Suzuoki)
* Donkey Kong Country (Donkey Kong)
* Bakumatsu Kikansetsu Irohanihoheto (Sakamoto Ryōma)
* Honey and Clover (Lohmeyer-senpai)
* Peter Pan no Bōken (Cecco, Nana)
* Pokémon (Farfetch'd)
* Brave Exkaiser (Tokuda Osamu)
* Ranma ½ (Jusenkyo Guide, Ryoga Hibiki)
* Lilo & Stitch: The Series (Stitch)
* Memories of the Flame: Tokyo Crisis (Michael Suzuki)
*  (Iwan Kurokobich)
* Mermaid Saga (Yuta)
* Kaiketsu Zorori (Zorori)

### OVA

* The Return of Jafar (Genie)
* Aladdin and the King of Thieves (Genie)
* Legend of the Galactic Heroes (Bruno von Silverberg)
* Ghost in the Shell: S.A.C. Solid State Society (Togusa)
* The Hakkenden (Inuyama Dōsetsu Tadatomo)
* Detonator Orgun (Tomoru Shindo, Orgun)
* Photon (Papacharino Nanadan)
* Megazone 23 (Shinji Nakagawa, Shion)
* The Lion King 1½ (Donald Duck, Genie, Stitch)
* The Little Mermaid II: Return to the Sea (Sebastian)
* Mermaid Forest (Yuta)
* Cinderella II: Dreams Come True (Jaq)

### Film animasi layar lebar

* Ice Age (Manny)
* Ice Age 2: The Meltdown (Manny)
* Arashi no Yoru Ni (Barry)
* Aladdin (Genie)
* Cowboy Bebop: The Movie (Spike Spiegel)
* The Prince of Darkness (The North Star)
* Mobile Suit Gundam: Char's Counterattack (Gyunei Guss)
* Ghost in the Shell (Togusa)
* Ghost in the Shell 2: Innocence (Togusa)
* Ghost in the Shell: S.A.C. Solid State Society (Togusa)
* Keroro Gunso the Super Movie (Zorori)
* Sakura Wars (Brent Furlong)
* Shrek (Donkey)
* Shrek 2 (Donkey)
* Millennium Actress (The Man of the Key)
* Disney cartoons (Donald Duck)
* Ninja Scroll (Jubei Kibagami)
* Beauty and the Beast (Beast)
* The Little Mermaid (Sebastian)
* Paprika (Dr. Osanai Morio)
* Pokémon: The First Movie (Mew)
* Pokémon: The Movie 2000 (Lugia)
* Pokémon 3: The Movie (Deibitto)
* Pokémon 4Ever (Hunter)
* Pokémon Heroes (Rosshi)
* Pokémon: Jirachi Wishmaker (Butler)
* Pokémon: Destiny Deoxys (Professor Lund)
* Pokémon: Lucario and the Mystery of Mew (Sir Aaron)
* Pokémon Ranger and the Prince of the Sea: Manaphy (Jack Walker)
* Kiki's Delivery Service (Officer, Announcer)
* Mulan (Mushu)
* Memories (Migeru)
* Lilo & Stitch (Stitch)
* Seri anime Ranma ½ (Ryoga Hibiki/P-chan)
* Robots (Fender)
* Saint Seiya Knights of the Zodiac: Legend of Sanctuary (Gemini Saga)
* Pokémon the Movie: Diancie and the Cocoon of Destruction (Ninja Riot)

### Permainan video

* Space Battleship Yamato (Susumu Kodai)
* SNK vs. series (Mike Bison)
* Kingdom Hearts (Donald Duck, Genie, Sebastian, Beast, Mushu)
* Kingdom Hearts: Chain of Memories (Donald Duck, Genie, Beast)
* Kingdom Hearts II (Donald Duck, Genie, Sebastian, Beast, Mushu, Stitch)
* Rival Schools (Daigo Kazama)
* Seri Super Robot Wars (Gyunei Guss)
* Street Fighter Alpha 3 (Cody Travers, Mike Bison, Narrator)
* Xenosaga (Gaignun Kukai, Albedo Piazzola)
* Tales of Destiny (Johnny Sheeden)
* Rogue Galaxy (Desert Claw, Narrator)
* Drakengard (Leonard)
* Brave Fencer Musashi (Ed)
* Mario Kart Arcade GP 2 (Live announcer)

### Film cerita

* I, Robot (Del Spooner)
* Independence Day (Captain Steven Hiller)
* Wayne's World (Wayne Campbell)
* West Side Story (Bernardo)
* Red Dwarf (Cat)
* Eddie Murphy
** 48 Hrs. (Reggie Hammond)
** Seri Beverly Hills Cop (Axel Foley)
** Seri The Nutty Professor (The Klump Family)
** Seri Dr. Dolittle (Doctor John Dolittle)
** Showtime (Officer Trey Sellers)
* Seri Austin Powers (Austin Powers, Doctor Evil, Fat Bastard, Gold Member)
* Kung Fu Hustle (Sing)
* Disney's House of Mouse (Donald Duck, Mike, Mushu, Genie, Beast)
* The Adventures of Sharkboy and Lavagirl in 3-D (Mr. Electricidad, Mr. Electric, Ice Guardian, Tobor, Iceman)
* Shaolin Soccer (Sing)
* Spy Kids 2: Island of Lost Dreams (Romero)
* Spy Kids 3-D: Game Over (Romero)
* Speed (Jack Traven)
* Space Jam (Michael Jordan)
* Dark Angel (Logan)
* The Sum of All Fears (Jack Ryan)
* Back to the Future trilogy (Marty McFly)
* Bad Boys (Marcus Burnett)
* Bad Boys II (Marcus Burnett)
* Band of Brothers (Captain Lewis Nixon)
* Fight Club (Tyler Durden)
* The Fifth Element (Zorg, Ruby Rhod)
* Flubber (Philip Brainard)
* Full House (Joey Gladstone)
* The Mask (Stanley Ipkiss/The Mask)
* Max Headroom (Max)
* Mr. & Mrs. Smith (John Smith)
* Mary Poppins (Bert)
* Memphis Belle (Dennis)
* Seri Rush Hour (Carter)
* The Lord of the Rings film trilogy (Éomer)
* Who Framed Roger Rabbit (Roger Rabbit)
* Lemony Snicket's A Series of Unfortunate Events (Count Olaf)
* Stranger Than Fiction (Harold Crick)

## Referensi

## Pranala luar

* Profil resmi di Across Entertainment 
* Profil di ANN Encyclopedia
*