Aathrai Tribeni (Nepali: आठराई त्रिवेणी) is a rural municipality (gaunpalika) out of eight rural municipality located in Taplejung District of Province No.

There are a total of 9 municipalities in Taplejung in which 1 is urban and 7 are rural.

The local body was formed by merging four VDCs namely Nighuradin, Fulbari, Hangpang, Change.

The population of the rural municipality is 13,784 according to the data collected on 2017 Nepalese local elections.

As per 2017, Aathrai Tribeni hosts a population of 13,784 across a total area of 88.83 km2.