Sergei Rozhenko
- Full Name: Sergei Rozhenko
- Species: Human
- Gender: Male
- Wife: Helena Rozhenko
- Son: Nikolai Rozhenko
- Son: Worf
- By 2346: Chief petty officer, warp field specialist, Starfleet; USS Intrepid (TNG: "Heart of Glory", "Sins of the Father")
- By 2347: Resident, Gault (TNG: "Heart of Glory"; DS9: "Let He Who Is Without Sin...")
- Resident, Russia, Earth (TNG Novel: Worf's First Adventure; TNG: "Family"; DS9: "Change of Heart")
- Retirement: After 2346, before 2367 (TNG: "Family")