Parvatas Kingdom refers to the territory of a tribe known as Parvatas (Mountaineers), mentioned in the epic Mahabharata. Most of the descriptions of Parvata kingdom in the epic refer to a mountainous country in the Himalayas. Parvatas are people from Nepal. There used to be a nation named Parvata in Nepal until it was unified with Nepal. Tribes belonging to other mountainous regions in the north west, west and the east of the Indo-Gangetic Plain were also known as Parvatas, when used as a collective name. Parvatas took part in the Kurukshetra War. The epic also mentions a sage named Parvata who was a companion of sage Narada.
Parvatas were mentioned in the list of tribes conquered by Krishna:-
The Avantis, the Southerners, the Parvatas, the Daserakas, the Kasmirakas, the Aurasikas, the Pisachas, the Samudgalas, the Kamvojas, the Vatadhanas, the Cholas, the Pandyas, the Trigartas, the Malavas, the Daradas difficult of being vanquished, the Khasas arrived from diverse realms, as also the Sakas, and the Yavanas with followers, were all vanquished by Vasudeva Krishna (7:11)
Parvatas took part in the Kurukshetra War siding with Kauravas.
In the back of the Garuda military formation made by Drona were the Kalingas, the Amvashthas, the Magadhas, the Paundras, the Madrakas, the Gandharas, the Sakunas, the Easterners, the Parvatas, and the Vasatis (7:20)