The 1906 Intercalated Games open in Athens.

The 1906 Intercalated Games or 1906 Olympic Games, held from 22 April 1906 to 2 May 1906, was an international multi-sport event that was celebrated in Athens, Greece. It was at the time considered to be an Olympic Games, and was referred to as the "Second International Olympic Games in Athens" by the International Olympic Committee (IOC). However, the medals that were distributed to the participants during these Games were later not officially recognised by the IOC and are not displayed with the collection of Olympic medals at the Olympic Museum in Lausanne, Switzerland.