Captain Leslie Wong was a Starfleet officer and commanding officer of the starship USS Cairo during the Dominion War. She was one of Jadzia Dax' instructors when Dax was a sophomore at Starfleet Academy.
In 2374, Captain Wong was aboard the Cairo when it disappeared while on patrol near the Romulan Neutral Zone. The USS Akagi reported Wong missing in action, while the USS Zapata reported her killed. (DS9: "In the Pale Moonlight", display graphic)