Rato Machindranath Jatra (रातो मच्छिन्द्रनाथको रथयात्रा), also known as Buṅga Dyaḥ Jātrā (बुंग द्यः जात्रा) is a Nepalese chariot festival which is held in Lalitpur, Nepal. It is one of the greatest religious events in the city and the longest chariot festival celebrated in the country.
The festival is dedicated to Buṅga Dyaḥ, who is also venerated as Karunamaya (करुणामय, "the compassionate one"), an aspect of the Bodhisattva Avalokiteśvara and is popularly believed to bring the monsoon rains. He is also identified as an aspect of the Hindu saint Machhindranātha. More specifically, he is referred as Rato Machhindranath in Nepali, where Rato, meaning "red", is a reference to the colour of the deity's image. The chariot festival is held according to the lunar calendar, so the date is changeable. It begins on the 4th day of the bright fortnight of Bachhalā, the seventh month in the lunar Nepal Sambat calendar.