Ernst Julius Remak (26 May 1849, Berlin – 24 May 1911, Wiesbaden) was a German neurologist who was the son of famed neurologist Robert Remak (1815-1865) and the father of the mathematician Robert Remak (1888-1942).
He received his education at the Universities of Breslau, Berlin, Würzburg, Strasbourg and Heidelberg, and obtained the degree of M.D. in 1870. At Heidelberg, he was a student of neurologist Wilhelm Heinrich Erb (1840-1921). Afterwards he took part in the Franco-Prussian War of 1870-71. After serving as assistant in the department for nervous diseases at the Charité Hospital, Berlin from 1873 to 1875, he established himself as a neurologist in the German capital, where he became privat-docent in 1877, and professor in 1893.
With Edward Flatau (1868-1932), he published an important work on neuritis and polyneuritis that was selected by Carl Nothnagel (1841-1905) to be part of his Handbuch der speziellen Pathologie und Therapie.