Karl Wilhelm Ferdinand Solger (28 November 1780 Schwedt – 20 October 1819 Berlin) was a German philosopher and academic. He is known as a theorist of Romanticism, and of irony.
After extensive studies and a varied career, in 1811 he became professor of philosophy at Berlin.
- a translation of Sophocles (1808; 2d ed., 1824)
- Erwin, Vier Gespräche über das Schöne und die Kunst (2 vols., 1815) A work on aesthetics, in which he took issue with August Wilhelm Schlegel, and which influenced both Hegel and Heinrich Heine.
- Philosophische Gespräche (1817)
- posthumous writings and letters, edited by Tieck and Raumer (2 vols., 1826)
- lectures in æsthetics, edited by Heyse (1829)