Levon John Kemalyan (24 February 1907 Fresno, California – 2 November 1976 Fresno, California) was a model railroading entrepreneur.
He founded Kemtron Corporation, a manufacturer of model railway cars, locomotives, parts (especially for scratchbuilders), and accessories.
In 1960 it was the world's largest maker of scale railroad kits, producing one million parts a year and selling them worldwide to enthusiasts as far away as India and Australia.