Ebba Hult De Geer

Ebba Hult de Geer (; 2 June 1882 – 28 July 1969) was a Swedish geologist known for her development of the geochronology of Sweden.

Biography Ebba Hult was born in Rödeby parish in Blekinge, Sweden. Hult was a teacher at Risbergska in Örebro 1902–04 and at Whitlockska in Stockholm 1904–07. She studied at Stockholm University 1906–08. She was a research assistant and secretary working with her husband, Gerard De Geer (1858–1943) whom she married in 1908.

De Geer was a professor of geology at Stockholm University and an influential participant in international geology. In 1924, De Geer retired from teaching and became the founder-director of the Geochronological Institute at Stockholm University. Following her husband's death in 1943, Hult became leader of the Stockholm University Geochronological Institute.