List of Famous people who died in 1915

Friedrich August Johannes Loeffler was a German bacteriologist at the University of Greifswald.

Oswald Külpe was a German structural psychologist of the late 19th and early 20th century. Külpe, who is lesser known than his German mentor, Wilhelm Wundt, revolutionized experimental psychology at his time. In his obituary, Aloys Fischer wrote that, “undoubtedly Külpe was the second founder of experimental psychology on German soil; for with every change of base he made it a requirement that an experimental laboratory should be provided.”

James Ogilvie-Grant, 11th Earl of Seafield, DL, briefly known as Viscount Reidhaven in 1888, was a Scottish nobleman.

Theodor Heinrich Boveri was a German zoologist, comparative anatomist and co-founder of modern cytology. He was notable for the first hypothesis regarding cellular processes that cause cancer, and for describing chromatin diminution in nematodes. Boveri was married to the American biologist Marcella O'Grady (1863–1950). Their daughter Margret Boveri (1900–1975) became one of the best-known post-war German journalists.

Alfred-Pierre Joseph Agache, also known simply as Alfred Agache, was a French academic painter.

Otto Eduard Weddigen was a German U-boat commander during World War I.

Juan Menéndez Pidal was a Spanish archivist, jurisconsult, historian, and poet, brother of Luis and Ramón Menéndez Pidal. He was long a director of the Archivo Histórico Nacional at Madrid, and a director of the Revista de Archivos, Bibliotecas, y Museos.

Julian Henry Francis Grenfell was a British soldier and a war poet of World War I.