Maria Vierdag

Dutch 4×100 m team at the 1931 European Championships. Vierdag is right.
Personal information
Born	22 September 1905 Amersfoort, the Netherlands
Died	17 July 2005 (aged 99) Amsterdam, the Netherlands
Height	1.70 m (5 ft 7 in)
Sport
Sport	Swimming
Club	AZ&PC, Amersfoort
Medal record Representing the  Netherlands Olympic Games 1932 Los Angeles 4×100 m freestyle European Championships 1927 Bologna 100 m freestyle 1927 Bologna 4×100 m freestyle 1931 Paris 4×100 m freestyle

Maria "Rie" Vierdag (22 September 1905 – 17 July 2005) was a Dutch freestyle swimmer who competed at the 1924, 1928 and 1932 Summer Olympics. She won a silver medal in the 4×100 m relay in 1932, setting a European record, and finished sixth in 1924. She failed to reach the 100 m finals at all Games.^[1]

Vierdag was a European champion in the 100 m in 1927 and in the 4×100 m relay in 1931. In 1927 she finished her 100 m race in the same time as Joyce Cooper, and an addition trial was arranged between them. Cooper was too tired to attend it, and Vierdag was announced as the winner.^[2]

Nationally Vierdag set eight Dutch records, yet won only one national title, in the 100 m in 1929.^[3] In retirement she worked as a physical education teacher and physical therapist.^[2]