Born two years after the Minor Asia catastrophe, Dimis Dadiras stayed in Constantinople until 1927 with his family. He came to Greece (Athens) and studied Law and Political Science in the Athens State University. In the age of 29 he made his first film. His father, Panagiotis Dadiras had already created the "Olympia Films "productions from 1930. Dimis Dadiras has worked with all the great actors and other artistes of his own time.

Dimis Dadiras was the director of 54 films and also producer, co-producer and writer in some of them. He also directed 2 TV series.