Who invented the olympics in ancient Greece?

no 1 specific person invented it, The Greeks invented athletic contests and held them in honour of their gods. The Isthmos game were staged every two years at the Isthmos of Corinth. The Pythian games took place every four years near Delphi. The most famous games held at Olympia, South- West of Greece, which took place every four years. The ancient Olympics seem to have begun in the early 700 BC, in honour of Zeus.