Harald August Bohr (22 April 1887 22 January 1951) was a Danish mathematician and football player. As a student, his footballing skill meant he was called up to the Danish national team for the 1908 Summer Olympics, where he won a silver medal. After receiving his doctorate in 1910, Bohr became an eminent mathematician, founding the field of almost periodic functions. His brother was the Nobel Prize-winning physicist Niels Bohr.