Tadaaki Doi (土井 正昭, Doi Tadaaki, 7 de enero) es un actor de voz japonés de la prefectura de Hyogo, Japón. Está afiliado a Arise Project. Habla el dialecto de de Kansai. Graduado de la Nihon Narration Engi Kenkyuujo (escuela de actores de voz).
Bear (voice) / Congregation of the Holy Swords Guild Member (voice) / Frog Samurai (voice) / King Goblin (voice) / Kingdom of the Flame Emperor Guild Member 2 (voice) / Knight in Armor (voice) / Mob Male Wizard (voice) / Player 1 (voice) / Player 2 (voice) / Player 5 (voice) / Rider (voice) / Spectator 2 (voice) / Spectator C (voice)