Thyra Eibe (3 November 1866 – 4 January 1955)[1] was a Danish mathematician and translator, the first woman to earn a mathematics degree from the University of Copenhagen.
In 1898 she moved to H. Adler Community College, later to become the Sortedam Gymnasium [da], where she remained until 1934, serving as principal for a year in 1929–1930.
[1] In undertaking her translation of Euclid, Eibe was motivated by the earlier work of Danish historian Johan Ludvig Heiberg, who published an edition of Euclid's Elements in its original Greek, with translations into Latin.
[2] As well as her translations, Eibe wrote several widely used Danish mathematics textbooks.
[1] In 1942, she was given the Tagea Brandt Rejselegat, an award for Danish woman who have made a significant contribution in science, literature or art.