Tiris Jast
- Name: Tiris Jast
- Species: Bolian
- Gender: Female
- 2376: Commander, executive officer, Starfleet; Deep Space 9 (DS9 Comic: N-Vector; TNG Novel: Maximum Warp - Dead Zone; DS9 Novel: Avatar, Book One)
- Also served as commanding officer, USS Defiant (TNG Novel: Maximum Warp - Dead Zone; DS9 Novel: Avatar, Book One)
- Death: March 28, 2376; USS Defiant (DS9 Novel: Avatar, Book One)
- KIA, Jem'Hadar attack