The article deals with generalization and systematization of information based on the results of the analysis of scientific-methodological literature on the identification of disparate information about the civilization of the people, who have made an invaluable contribution to the formation and flourishing of one of the greatest cultures of the ancient world – Greek culture. It is stressed that modern historical science completely ignores a civilization of pelasg because of unauthenticity of information on its ethnos. In the annals of modern history a large number of data on the people to the Achaean period of Greece, but unfortunately, all of them are represented by the separate historical data about pelasg which aren’t systematized. In mythological tradition the primogenitor of pelasg is considered to be the mythical Pelasg, Argolida’s tsar, by the name of which the residents of Greece are called. About these brave, adventurous people who had no own state, and existed with thirst of life, with the unique thought to survive and keep the cultural traditions as independent ethnos, famous Ancient Greek and Ancient Roman historians Herodotus, Strabon, Pavsany, Apollodorus, Fukidid, Dionysius Galikarnassky, Diodor Sitsiliysky, etc. wrote. Legendary poets and writers of ancient times: Homer in «Illiada», Virgil in «Eneida», Eskhil in «Prokhalnitsi» and Sophocles in «Inakh» described these people. Pelasg is a name with which Ancient Greek historians and geographers called Greek people occupying Hellas till the emergence of the Cretan-Mycenaean civilization. In article an attempt is made to provide realistic historical information on the people who stood at the origins of the basis and development of Ancient Greek art. Pelasg is the ancient ethnos of an Indo-European origin which came in the XХ century B.C. to the territory of the Peloponnesus peninsula and created bases of the civilization preceding Cretan-Mycenaean. In this work there is provided the answer to a question, what people, nevertheless, stood at the origins of physical culture of Ancient Greece: pelasg, achaeans, doriyets or Ionians and who were more civilized, Indo-Europeans – pelasg, or Aryans – achaeans with doriyets. The prospect of further research should be the introduction of the information on the physical culture of the people of the Achaean period of Ancient Greece to the lecture course of the discipline “History of physical culture” on the subject “Physical culture of the antiquity”.