Alyssa Ogawa
- Full Name: Alyssa Ogawa
- Species: Human
- Gender: Female
- Husband: Andrew Powell
- Son: Noah Powell
- 2365: Ensign, nurse, Starfleet; USS Enterprise (NCC-1701-D) (TNG Novel: Double Helix - Vectors)
- By April 2367: Ensign, head nurse, Starfleet; USS Enterprise (NCC-1701-D) (TNG: "Future Imperfect")
- July 2370: Lieutenant junior grade, head nurse, Starfleet; USS Enterprise (NCC-1701-D) (TNG: "Lower Decks")
- By 2373: Lieutenant, head nurse, Starfleet; USS Enterprise (NCC-1701-E) (Star Trek: First Contact; TNG Novel: A Time to Sow, A Time to Kill, A Time to Heal)
- November 2379: Head nurse, Starfleet; USS Titan (TNG Novel: Taking Wing)