Grazna was a female Denobulan in Starfleet in the 24th century.
Grazna was an enlisted warp specialist who served aboard the USS Discovery sometime prior to 2371. While serving on that ship, she became acquainted with security officer Manolet Dayrit.
In early 2381, Grazna transferred aboard the USS Musgrave, under the command of then-Captain Dayrit. Grazna replaced Crewman Thrantira zh'Zulis, who had transferred to the reconstruction effort on Andor. (ST novel: A Singular Destiny)