Johann Lukas Schönlein (30 November 1793 – 23 January 1864) was a German naturalist, and professor of medicine, born in Bamberg.
He studied medicine at Landshut, Jena, Göttingen, and Würzburg.
After teaching at Würzburg and Zurich, he was called to Berlin in 1839, where he taught therapeutics and pathology.
He served as physician to Frederick William IV.