Buddhisagar (Nepali: बुद्धिसागर; born 2 June 1981) is a Nepali writer. He is best known for his novel Karnali Blues and Phirphire.

Buddhisagar was born in Matera, a place in Kailali district of Nepal. Later his family moved to Katase Bazzar and finally Kalikot district. His debut and most popular novel Karnali Blues is also set in these locations. He was passionate about writing from early age. From a very early age, his poems were played on radios. He moved for Kathmandu after passing his School Level. On moving to Kathmandu, he studied journalism at RR Campus. He was a journalist of Naya Patrika and Nagarik News before he set his career as a full-time writer.