Elisabeth Johanna Maria "Lies" Bonnier (born 8 July 1925) is a retired Dutch swimmer who won a silver medal at the 1950 European Aquatics Championships in the 200 m breaststroke. In 1952, after winning a national title, she competed in the same event at the Summer Olympics, but was eliminated in preliminaries. On 17 November 1953 she married Chris Burg.