Nguyễn Thị Ngọc Khánh (born July 28, 1976, in Hanoi) was crowned the sixth Miss Vietnam on November 1, 1998, at sporting event hall Phan Đình Phùng, Ho Chi Minh City, when she was a student at Law University, Ho Chi Minh City.
Her mother is a Houtbois-player Lê Thị Thắng.
She married Lê Công Định, a prominent lawyer, in 2004.
She was a flight attendant, a director of Tien Sa Company, an employee of Sacchi Sacchi advertising company and model.
Ngoc Khanh is first runner-up in Miss International Fashion Egypt 1999,