There is a saying, OLD IS GOLD, which is true in the case of some of the old Nepali movies. Those golden old Nepali movies are online on YouTube.
Despite pirated sites sometimes you can find movies including Nepali movies online on credible sites. These sites require the viewers to pay a certain amount of money to buy the online version of the movie.
On the other hand, YouTube has almost all of the Nepali movies online.
List of Old Nepali Movies Online
KUSUME RUMAL
Cast : Tripti Nadkar, Udit Narayan Jha, Bhuwan K.C, Pradip Pakharin, Bishowmani, Lakki Lama,
Director / Screen Play/ Editor : Tulshi Ghimire
CHINO
CASTS: Shiv Shrestha, Bhuwan K.C., Sunil Thapa as Rate Kaila
Producer: Mohan Srafa, Gopal Buddhacharya, Anup Rana
Writer/Direction: Tulsi Ghimire
LAHURE
CAST: Shrawan Kumar, Tripti Nadkar, Pradeep Kumar, K.B. Moktan, C.K, Tamang, Archana Singh, Laxmi Pradhan, C. Lama etc.
Direction: Tulsi Ghimire
MAITIGHAR
CAST: Mala Sinha, Chidambar Prasad Lohani, Sunil Dutt
Producer: Dr. Yogendra Jha
Direction: BS Thapa
KANCHI
Directed by: B.S. Thapa.
Cast: Shiva shrestha, Sharmila Malla
Producer: Bhagawan Shrestha
Story/Script/Direction: B.S. Thapa