Lieutenant Alan Sims was a member of Starfleet in the 24th century.
In 2354, he was named as a Starfleet Operational Support Services officer on a directory for Starbase 32, Maxia sector. His room number was 75620. (TNG: "Violations", directory)
In 2372, as a crewmember aboard the USS Voyager, he was named on a duty roster for the planetary geosciences division. (VOY: "Parturition")
Sims, who was listed on a piece of background artwork, was named for property master Alan Sims.