Benjamin "Ben" Betts was a Starfleet officer in the 24th century.
In 2372, he was listed as a Propulsion Systems officer on the dedication plaque of the USS Enterprise-E. (Star Trek: First Contact set artwork)
In 2374, he was listed as the Tactical Ops officer on the dedication plaque of the USS Prometheus. (VOY: "Message in a Bottle" set artwork)
This character was only mentioned in writing.
He was named for computer graphics and video playback engineer Ben Betts