The 1896 Summer Olympics, officially known as the Games of the I Olympiad, were held in 1896 in Athens, Greece. These games were the first modern Olympic Games and the first Games since Roman emperor Theodosius I banned the Ancient Olympic Games in 393 as part of the Christian campaign against paganism. They were held between Monday, April 6 and Wednesday, April 15 1896.

An 1894 congress organized by Pierre de Coubertin in Paris established the International Olympic Committee and appointed the Greek capital of Athens as the host city. The Greeks had little experience with organizing sports events, and initially had financial troubles as well, but managed to have everything ready in time.

Although the number of participating athletes was low by current standards, it had the largest international participation for any sports event to that date. In spite of the absence of many of the time's top athletes, the Games were a success with the Greek public. The athletic highlight for the Greeks was the marathon victory by their compatriot Spiridon Louis. The most successful competitor in terms of victories was German wrestler and gymnast Carl Schuhmann.

After the Games, De Coubertin and the IOC were petitioned by, among others, Greece's King George and some of the American competitors in Athens to hold all following Games in Athens. However, the 1900 Summer Olympics were already planned for Paris and, barring the so-called Intercalated Games of 1906, the Olympics did not return to Greece until the 2004 Summer Olympics.