Sven-Marcel Voss is a German actor and voice artist born in 1989 in Dortmund. He trained at the Arturo Schauspielschule in Cologne from 2011 to 2015 and has been a member of the ensemble at the Theater Heilbronn since the 2016-2017 season, where he has performed in numerous stage productions. In addition to his theatre work, he is regularly active as a voice actor for film, television, and video games.

As a voice actor, Voss has lent his voice to several characters in anime series. He is known for providing the German voice for the character Bete Loga in the DanMachi franchise, including its spin-off Sword Oratoria: Is It Wrong to Try to Pick Up Girls in a Dungeon? On the Side from 2017, as well as in DanMachi II in 2019 and DanMachi V in 2024 and 2025. His other notable anime roles include Ginji in Divine Gate in 2016, Takeo Kurata in GATE in 2016, and Cristobal Haslo Zaloudek in Knight's & Magic in 2017. He also voiced a character in the 2023 anime film Komada: A Whisky Family. Beyond animation, his voice work encompasses video games such as Titanfall 2, Battlefield 1, and Mirror's Edge Catalyst.

For his stage performances, Voss has received recognition, including the Kilianpreis in 2023 for his portrayal of the title role in Georg Büchner's Woyzeck at the Theater Heilbronn, an award given for outstanding acting achievement.