Marsha Kenyon was a female human in Starfleet in the 24th century. She was married a fellow Starfleet officer, Norman Kenyon, and the two had a daughter, Stephanie, not long after.

Sometime prior to 2365, Kenyon was assigned as science officer of the USS Harriman, under the command of her husband. In 2365, the Harriman responded to an attack on a Klingon cargo ship by a Romulan warbird, commanded by Commander Tomalak. The Harriman was lost in the ensuing fight, and Marsha Kenyon was among the casualties. (NF novel: Once Burned; short story: "Performance Appraisal")