Category:Maria Vierdag

**Maria Vierdag**
	Dutch swimmer (1905-2005)
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Date of birth	22 September 1905; Amersfoort
Date of death	17 July 2005; Amsterdam
Country of citizenship	Kingdom of the Netherlands;
Country for sport	Namibia;
Occupation	swimmer;
Authority file
	Q463152; ISNI: 0000000387085213; VIAF ID: 279933098; Nationale Thesaurus voor Auteursnamen ID: 326500146; Olympedia people ID: 49423
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Marie (Rie) Smit-Vierdag (Amersfoort, 22 september 1905 - Amsterdam, 17 juli 2005) stond aan de wieg van de successen van het Nederlandse zwemmen in de jaren '20 en '30.