Wiljon Vaandrager

{{Short description|Dutch rower (born 1957)}}

{{Use dmy dates|date=April 2018}}

{{Infobox sportsperson

|name=Wiljon Vaandrager

|birth_date=27 August 1957

|birth_place=

|death_date=

|death_place=

|show-medals=yes

|medaltemplates={{MedalSport | Women's rowing}}

{{MedalCountry | the {{NED}} }}

{{MedalCompetition|Olympic Games}}

{{MedalBronze| 1984 Los Angeles | Eights}}

}}

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.