Karl Kuno Thure Freiherr von Uexküll (March 15, 1908, Heidelberg – September 29, 2004, Freiburg) was a German scholar of psychosomatic medicine and biosemiotics. He developed the approach of his father, Jakob von Uexküll, in the study of living systems and applied it in medicine.
His mother was Gudrun Baroness von Uexküll (Gräfin von Schwerin).