Alan Bernard was a Human Starfleet officer in the mid-24th century.
In 2365, he held the rank of Captain, and was the commanding officer of the USS Yuri Gagarin. (TNG: "The Measure Of A Man")
Prior to stardate 50749.5, Captain Bernard was a research and development officer who worked on the USS Prometheus. (VOY: "Message in a Bottle" set artwork)