|Born||27 August 1957|
Willemien Jonetta ("Wiljon") Vaandrager (born 27 August 1957 in Brummen, Gelderland) is a former international rower from the Netherlands, who won the bronze medal in the Women's Eights at the 1984 Summer Olympics in Los Angeles, California, alongside Marieke van Drogenbroek, Lynda Cornet, Greet Hellemans, Nicolette Hellemans, Harriet van Ettekoven, Catharina Neelissen, Anne Quist, and Martha Laurijsen.
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