Mekhong Full Moon Party (; ; literally, "The 15th Day of the 11th Month") is a 2002 Thai comedy-drama about the Naga fireballs that arise from the Mekong at Nong Khai on the full moon in October. Written by Jira Maligool, the film was also Jira's directorial debut.

Plot

Khan, a Nong Khai native now attending university in Bangkok comes home for the annual Naga fireballs festival, just as a debate is raging over the cause of the fireballs. A local physician, Dr. Nortai, believes there is a scientific explanation for the phenomenon. A university professor, Dr. Suraphol, thinks the fireballs are manmade and are a hoax.