T'Ryssa Chen
- Full Name: T'Ryssa Chen
- Born: c.2354 (TNG Novel: Greater Than the Sum)
- 26 in September 2380 per text
- Species: Human/Vulcan hybrid
- Gender: Female
- Father: Sylix
- Mother: Antigone Chen
- By c.2364: Resident; Maravel (TNG Novel: Greater Than the Sum)
- Cadet, Starfleet Academy, science track (TNG Novel: Greater Than the Sum)
- Focus on xenoanthropology, xenoethology (TNG Novel: Greater Than the Sum)
- By September 2380: Lieutenant junior grade, contact specialist, Starfleet; USS Rhea (TNG Novel: Greater Than the Sum)
- By January 2381: Lieutenant, contact specialist, Starfleet; USS Enterprise (TNG Novel: Greater Than the Sum)