Oskar Schade (March 25, 1826 – December 30, 1906) was a German philologist and Germanist born in Erfurt.
In 1860 he received his habilitation at Halle, and from 1863 to 1906 was a professor at the University of Königsberg.
He was the author of the influential Altdeutsches Wörterbuch (Old German Dictionary), and with August Heinrich Hoffmann von Fallersleben (1798-1874), was co-editor of the Weimarisches Jahrbuch für deutsche Sprache, Literatur und Kunst (Weimar Annals of German language, literature and art). Other noted works by Schade include:
- Geistliche Gedichte des 14. und 15. Jahrhunderts vom Niederrhein (Spiritual poems from the 14th and 15th century of the Lower Rhine), 1854.
- Satiren und Pasquille aus der Reformationszeit (Pasquille and satire from the time of the Reformation), 1863.
- Deutsche Handwerkslieder, 1865.