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 was one of the first German medical professors to lecture in the vernacular tongue instead of Latin.

[6][7] Prior to Schönlein's designation, tuberculosis had been called "consumption".