For the Starfleet lieutenant assigned to the USS Enterprise-D, please see Diana Giddings.
USS Robert Louis Stevenson Starbase 55

Diana Giddings on a Starfleet Command order

Captain Diana Giddings was a Starfleet officer in the 24th century.

In 2364, she was the commander of the USS Robert Louis Stevenson. Sometime in that year, she received an order about the reassignment of personnel from Commodore Bill Marafe of Starbase 55. (TNG: "Conspiracy", okudagram)

This character was only mentioned in writing.