| Karl Lark-Horovitz | |
| Birth Date: | July 20, 1892 |
| Birth Place: | Vienna, Austria-Hungary |
| Death Place: | West Lafayette, Indiana |
| Fields: | Physics |
| Workplaces: | Purdue University |
| Alma Mater: | University of Vienna |
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| Doctoral Students: | Hellmut Fritzsche |
Karl Lark-Horovitz (July 20, 1892 – April 14, 1958) was an American physicist known for his pioneering work in solid-state physics that played a role in the invention of the transistor. He brought the previously neglected physics department at Purdue University to prominence during his tenure there as department head from 1929 until his death in 1958.
Born Karl Horovitz in Vienna, Austria, on July 20, 1892, he was encouraged by both his father, Moritz, (dermatologist) and mother, Adele (Hofmann), to pursue varied scholarly interests. Horovitz choose to attend Humanistic School for secondary education.[1]