Momme Mommsen is a German voice actor and actor, recognized for his work in dubbing anime and live-action films for the German-speaking market. His dubbing career includes providing the German voice for the character Franky in the long-running anime series One Piece. Mommsen has been associated with this role in two capacities, initially as the first voice actor for the character and later returning as the second voice from episode 1086 onward. His other notable anime dubbing credits include the role of Kazuhiro Yamaji, also known as Gorland, in Star Blazers 2202: Space Battleship Yamato and voicing Tomoyuki Shimura in the film Fullmetal Alchemist - Der Film: Der Eroberer von Shamballa.

In addition to his work in anime, Mommsen has lent his voice to German dubs of live-action films. An example of this is his work on the film Double Trouble - Ein Cop auf Abwegen, where he dubbed the actor Luis Guzmán in the 2013 synchronization. Beyond voice acting, he has also appeared as an on-screen actor in German television productions. His television acting credits include roles in the long-running soap opera Unter uns as Jürgen Breuer in the mid-1990s and a guest appearance in the series Die Motorrad-Cops - Hart am Limit.