Isthmian Games or Isthmia were one of the Panhellenic Games of Ancient Greece, and were named after the Isthmus of Corinth, where they were held. As with the Nemean Games, the Isthmian Games were held both the year before and the year after the Olympic Games, while the Pythian Games were held in the third year of the Olympiad cycle.

The Nemean Games were one of the four Panhellenic Games of Ancient Greece, and were held at Nemea every two years.