Arun Belbase, professionally known as Arun Chhetri (Nepali: अरुण छेत्री; born February 6, 1996), is a Nepalese actor hailing from Ghorahi, Dang. Chhetri embarked on his acting career in 2017, making his debut with the web series "Lastai Rag Bho," produced and distributed by Highlight Nepal. However, it was his role in the 2022 movie "Mahapurush" that garnered him recognition and attention in the industry. "Mahapurush" is a Nepali drama film penned and directed by Pradip Bhattarai. The movie features Maha Jodi (Madan Krishna Shrestha and Hari Bansha Acharya) along with Gauri Malla, Rabindra Singh Baniya, Rajaram Paudel, and Anjana Baraili.

Chhetri's professional acting journey commenced with the web series "Lastai Rag Bho" in 2017. In the same year, he also appeared in the short film “Mayako Sansar.” His audition for and subsequent selection as the lead in the movie "Mahapurush" (released in 2022) marked a pivotal moment in his career, bringing him significant attention and prominence. Following "Mahapurush," Chhetri starred in another film titled "Prema," released on March 31, 2023.