Ezri Dax
- Full Name: Ezri Dax
- Pre-Bonding Name: Ezri Tigan (DS9: "Prodigal Daughter")
- Born: 2354; New Sydney, Sappora VII (DS9: "Honor Among Thieves", "Prodigal Daughter"; DS9 Short Story: "Second Star to the Right...")
- Species: Trill
- Gender: Female
- Mother: Yanas Tigan
- Brother: Janel Tigan
- Brother: Norvo Tigan
- 2369: Cadet, Starfleet Academy, medical track
- 2372: Ensign, Starfleet Medical Academy, psychiatry track (startrek.com)
- 2374: Ensign, assistant counselor (field residency), Starfleet; USS Destiny (DS9: "Shadows and Symbols")
- December 2374: Bonded to the Dax symbiont during a medical emergency onboard the USS Destiny during its transportation back to Trill (DS9: "Shadows and Symbols")
- February 2375: Lieutenant junior grade, counselor, Starfleet; Deep Space 9 (DS9: "Afterimage")
- Final year of medical training waived on request of Benjamin Sisko due to her unique circumstances, including her bonding with the Dax symbiont
- Early April 2376: Recipient of the Starfleet Citation for Conspicuous Gallantry for actions in defending Deep Space 9 against Jem'Hadar attack (DS9 Novel: Avatar, Book One)
- April 2376: Lieutenant, executive officer, Starfleet; USS Defiant (DS9 Novel: Mission Gamma: Twilight)
- Transfer to command track following Jem'Hadar attack on Deep Space 9
- September 2376: Recipient of the Starfleet Medal of Honor for actions in defending the Inamuri during Gamma Quadrant exploration mission (DS9 Novel: Mission Gamma: Twilight)
- 2377: Advanced Tactical Training, Tellar (DS9 Novel: Ascendance)
- By 2380: Lieutenant commander, second officer, Starfleet; USS Aventine (TNG: Greater Than the Sum)
- 2381: Captain, commanding officer, Starfleet; USS Aventine (Novel: Gods of Night)