Denise Okuda was a Starfleet officer in the 23rd and 24th centuries.
In 2293, she was listed as an UESPA representative on the dedication plaque of the USS Enterprise-B. (Star Trek Generations, dedication plaque)
In the 2370s, she was listed as a Science Ops officer on the dedication plaques of Defiant-class starshipss. (DS9: "The Die is Cast" dedication plaque; DS9: "Valiant" dedication plaque; DS9: "The Dogs of War" dedication plaque)
In 2372, she was listed as a Systems Management officer on the dedication plaque of the USS Enterprise-E. (Star Trek: First Contact, dedication plaque)
This character was only mentioned in writing.