Nikolai Rozhenko
- Full Name: Nikolai Sergeyevich Rozhenko
- Species: Human
- Gender: Male
- Father: Sergei Rozhenko
- Mother: Helena Rozhenko
- Uncle: Yuri NLN
- Unspecified maternal or paternal
- Brother: Worf
- Adoptive
- By 2347: Resident, Gault (TNG: "Heart of Glory"; DS9: "Let He Who Is Without Sin...")
- c.2351: Resident, Russia, Earth (TNG Novel: Worf's First Adventure; TNG: "Family"; DS9: "Change of Heart")
- November 2358: Cadet; Starfleet Academy (TNG Novel: Worf's First Adventure; TNG: "Heart of Glory"; "Homeward")
- Entered with Worf per "Heart of Glory"
- Dropped out December 2358 (TNG Novel: Worf's First Adventure)
- By 2370: Doctorate in Anthropology (TNG: "Homeward")
- June 12, 2370: Settled with Boraalan civilization after their relocation to Vacca VI (TNG: "Homeward")