Adele G. Simmons was a Starfleet officer in the 24th century. Her planet of origin was Delos IV. She was a lieutenant.
In 2369, she was a crew member aboard the USS Enterprise-D. She was one of seventeen individuals who were from worlds outside the Federation. Her proteins were tested by Doctor Beverly Crusher for a possible configuration match with the fragments of a 4 billion-year old genetic program. The results came back negative. (TNG: "The Chase")
In 2371, she was a crewmember aboard the USS Voyager. She was among the crew stranded in the Delta Quadrant, when Voyager was forcefully brought there by the Caretaker.
In 2372, she was listed on the Planetary Geosciences Division duty roster. (VOY: "Parturition")