Shinshū Fuji is a Japanese actor and voice actor affiliated with the talent management office Gekidan Hitotsubashi. He is recognized for his deep and authoritative vocal tone, which has led to his casting in a variety of prominent roles in both anime series and dubbed versions of foreign films.

In anime, Fuji has portrayed several impactful characters. He is the voice of the powerful demon Chandler in the anime series The Seven Deadly Sins, specifically in its third season, The Seven Deadly Sins: Imperial Wrath of The Gods, and the subsequent season, Dragon's Judgement. His filmography also includes the role of Kanetsugu Matō in the series Wave, Listen to Me! and the character Risotto Nero in JoJo's Bizarre Adventure: Golden Wind.

Beyond original anime productions, Fuji is highly active in the field of voice-over dubbing for foreign films and video games. A defining role in his dubbing career is providing the Japanese voice for the character Bruce Wayne and his superhero alter ego, Batman. He has voiced this character in major film releases such as The Dark Knight and the video game Batman: Arkham Knight.