D
- John Rhys-Davies as Leonardo da Vinci
- Roxann Dawson as B'Elanna Torres
- John de Lancie as Q
- Keegan de Lancie as Q, Junior in episode Q2
- Peter Dennis
- Andy Dick as a version of the emergency medical hologram, episode Message in a Bottle (Star Trek: Voyager)
- Brad Dourif
Read more about this topic: List Of Star Trek: Voyager Cast Members