Worf
- Full Name: Worf
- Born: 2340, Qo'noS(TNG: "Sins of the Father")
- Species: Klingon
- Gender: Male
- Father: Mogh
- Brother: Kurn
- Father: Sergei Rozhenko
- Adoptive
- Mother: Helena Rozhenko
- Adoptive
- Brother: Nikolai Rozhenko
- 2345: Survivor of Khitomer massacre (TNG: "Sins of the Father")
- Adopted by Rozhenko family following rescue mission by USS Intrepid (TNG: "Sins of the Father", "Family")
- 2358: Cadet, Starfleet Academy, Starfleet
- First Klingon in Starfleet (DS9: "The Sword of Kahless")
- December 2363: Lieutenant junior grade, bridge watch officer, Starfleet; USS Enterprise (NCC-1701-D) (TNG Novel: The Buried Age)
- November 2364: Lieutenant junior grade, acting chief of security, Starfleet; USS Enterprise (NCC-1701-D) (TNG: "We'll Always Have Paris")
- Position made official as of January 2365
- 2366: Lieutenant, chief of security, Starfleet; USS Enterprise (NCC-1701-D) (TNG: "We'll Always Have Paris")
- August 18, 2371: Lieutenant commander, chief of security, Starfleet; USS Enterprise (NCC-1701-D) (Star Trek: Generations)
- December 2372: Lieutenant commander, strategic operations officer, Starfleet; Deep Space 9 (DS9: "The Way of the Warrior")
- December 2375: Federation Ambassador to the Klingon Empire (DS9: "What You Leave Behind")
- November 2379: Lieutenant commander, executive officer, Starfleet; USS Titan (TNG Novel: A Time for War, A Time for Peace)
- Declined prior to arrival aboard vessel following the death of Commander Data (TNG Novel: A Time for War, A Time for Peace)
- November 2379: Lieutenant commander, acting executive officer, Starfleet; USS Enterprise (NCC-1701-E) (TNG Novel: A Time for War, A Time for Peace)
- April 2380: Commander, executive officer, Starfleet; USS Enterprise (NCC-1701-E) (TNG Novel: Resistance)