Johannes Bahr is a German voice actor known for his work in dubbing, particularly for providing German voices for characters in anime series and films. His dubbing career is documented in the German dubbing database, which lists over 40 separate voice roles.

In the realm of anime, Bahr is recognized for voicing the character Biz O'Naill in the 2019 series Cop Craft. His other notable anime dubbing credits include roles in several other series. He provided a voice for the character Hartmeyer in Izetta, die letzte Hexe (Izetta: The Last Witch). He also had voice roles in the series GATE, where he voiced the characters Godasen and Paps, as well as an Elfen-Ältester (elf elder). His work extends to films as well, such as his role in the German dubbing of the 2013 anime film Hanasaku Iroha: The Movie - Home Sweet Home.

Beyond anime, Bahr's dubbing work is extensive and includes voiceovers for live-action films and television series. He has lent his voice to characters in a wide range of productions, from classic series like Sherlock Holmes and Die Agatha Christie Stunde to films such as Fast Color - Die Macht in Dir. His work often involves dubbing over the voices of original actors, including well-known performers like James Cosmo and Corbin Bernsen. He has also been active in creating new German dubs for older films, such as the 1946 film Der grüne Finger. In addition to on-screen dubbing, Bahr's voice work has been featured in German audio dramas (Hörspiele), with documented roles in productions from the early 1990s. His career demonstrates a consistent engagement with voice performance across various media and genres.