Cornelius Ubbo Ariëns Kappers (9 August 1877 – 28 July 1946) was a Dutch neurologist and anatomist.
As a student, Ariëns Kappers was influenced by the work of the German neurologist Ludwig Edinger (1855–1918) and Dutch anatomist Louis Bolk (1866–1930).
In 1909, Ariëns Kappers became the first director of the Netherlands Central Institute for Brain Research (Nederlands Instituut voor Hersenonderzoek), a position he maintained until his death in 1946.
During his tenure, the institute became a center internationally renowned for its work in comparative neuroanatomy.
[1] In the Second World War he used his expertise in Phrenology as proof that certain persons couldn't be Jewish, thereby saving them from German persecution and death.