Akio Otsuka is a Japanese voice actor affiliated with Mausu Promotion. He is the son of fellow voice actor Chikao Otsuka. In February 2005, he married voice actress Yoko Soumi, but later divorced her in 2009.

大塚明夫 《蓝宝石之谜》的尼莫船长、《攻壳机动队》的巴特、《怪医黑杰克》的黑杰克、《亚尔斯兰战记》的国王、

大塚明夫是日本的男性聲優、演員、旁白。出身於東京都，所屬公司為 Mausu Promotion 。

Akio Otsuka je japonský hlasový herec spojený se společností Mausu Promotion. Je synem herce Chikao Otsuky. V únoru 2005 se oženil s dabérkou Yoko Soumi, ale později se s ní v roce 2009 rozvedl.