Julian Leopold Ochorowicz ("Yool-yahn Oh-hor-oh-veech"; outside Poland, also known as Julien Ochorowitz; Radzymin, 23 February 1850 – 1 May 1917, Warsaw) was a Polish philosopher, psychologist, inventor (precursor of radio and television), poet, publicist and leading exponent of Polish Positivism.
Julian Ochorowicz was the son of Julian and Jadwiga, née Sumińska.
Ochorowicz studied natural sciences at Warsaw University, graduating in 1871. He subsequently studied at Leipzig University under Wilhelm Wundt; in 1874 he received his doctorate there with a thesis On Conditions of Consciousness.
Returning to Warsaw, in 1874-75 he was editor-in-chief of the popular Polish-language periodical, Niwa (The Field). From 1881 he was assistant professor (docent) of psychology and natural philosophy at Lwów University.
In 1882 he was sent to Paris, France, where he spent several years. Later, from 1907, he would be co-director of the Institut General Psychologique.
Returning to Warsaw, from 1900 Ochorowicz was president of Kasa Literacka (the Literary Fund). He published his pedagogical papers in Encyklopedia Wychowawcza (the Encyclopedia of Education).