Hendrika Johanna van Leeuwen

Hendrika van Leeuwen
Van Leeuwen, c. 1920
Born(1887-07-03)3 July 1887
The Hague, South Holland, Netherlands
Died26 February 1974(1974-02-26) (aged 86)
Delft, South Holland, Netherlands
Alma materLeiden University (PhD)
Known forBohr–Van Leeuwen theorem (1919)
RelativesGunnar Nordström (brother-in-law)
Scientific career
FieldsMagnetism
InstitutionsTechnische Hogeschool Delft (1920–52)
ThesisVraagstukken uit de electronentheorie van het magnetisme (1919)
Doctoral advisorHendrik Lorentz

Hendrika Johanna van Leeuwen (July 3, 1887 – February 26, 1974) was a Dutch theoretical physicist known for her early contributions to the theory of magnetism. She demonstrated that magnetism in matter can only be explained using quantum mechanics. She was one of the first women to study physics at a university level in the Netherlands.