Sandra Peterson was a 24th century Starfleet officer serving under Captain Kathryn Janeway aboard the USS Voyager. In 2371, Peterson was among the crew stranded in the Delta Quadrant, when Voyager was forcefully brought there by the Caretaker.

Peterson's name was read aloud by Harry Kim, in early 2372, when Kim reviewed the Voyager's crew roster. (VOY: "Non Sequitur")