Eurovision Song Contest Winners: 1 winner
Teddy Scholten (middle name Margaretha)   1959   Netherlands  
Notable Actors and Entertainers: 2 presenters, 1 dancer
Mata Hari (a.k.a. Margaretha)   1876-1917  
Linda de Mol (middle name Margaretha)   1964-  
Monique Smit (a.k.a. Margaretha)   1989-  
Notable Athletes: 1 soccer
(soccer) Vivianne Miedema (middle name Margaretha)   1996-  
Notable Musicians: 1 singer
Teddy Scholten (middle name Margaretha)   1926-2010  
Notable Politicians and Statespeople: 1 politician
Marga Klompé   1912-1986  
Olympic Medalists: 1 bronze, 1 silver
(bronze) Willemijn Duyster (middle name Margaretha)   1996   field hockey  
(silver) Margaretha Sigfridsson   2014   curling  
Other Royalty: 2 princesses
Margaretha of Sweden   1899-1977   Sweden  
Margaretha of Sweden   1934-   Sweden  
Saints: 1 blessed
Blessed Margareta Kratz (a.k.a. Margaretha)   1430-1532