Demetrius Hondros (el|Δημήτριος Χόνδρος, April 9./21. 1882 in Serres - July, 29. 1962, Athens) was a Greek physicist. He was born in April 1882 in what was then the Ottoman Empire.
Hondros[1] studied under Arnold Sommerfeld at the University of Munich, and was granted his Ph.D. in 1909.[2] In 1922, he was cited as being professor of physics at the University of Athens.[3]