H. Kadin was a Starfleet officer in the 23rd century.
Kadin was listed as a Starfleet Command officer on the dedication plaques of the USS Shenzhou, the USS Discovery, and the USS Enterprise. (DIS: "The Vulcan Hello", dedication plaque; DIS: "Context Is for Kings", dedication plaque; DIS: "Such Sweet Sorrow"; SNW: "Strange New Worlds")
This character was only mentioned in writing.
This officer was named after executive producer Heather Kadin.