Dhammalok Mahasthavir (Nepali: धम्मालोक महास्थविर) (born Das Ratna Tuladhar) (16 January 1890 – 17 October 1966) was a Nepalese Buddhist monk who worked to revive Theravada Buddhism in Nepal in the 1930s and 1940s.

[7] Dhammalok returned to Kindo Baha, where he began writing a series of books in Nepal Bhasa that challenged traditional thinking.

Lokay Kuchal Kubyabahar Sudhar ("Reforming Ill Practices and Customs in Society") and Dharmaya Namay Pap ("Sinning in the Name of Religion") published from Varanasi, India are some of his well-known works.

[10] The government declared that the activities of the Theravada monks of spreading Buddhism and writing in Nepal Bhasa were illegal, and on 30 July 1944, eight monks including Dhammalok, Pragyananda Mahasthavir and Kumar Kashyap Mahasthavir were expelled from Nepal for refusing to sign a pledge to stop doing so.

Dhammalok spent his exile in India, Tibet and Bhutan, and returned to Kathmandu on 5 June 1946 after the ban was lifted.

[13] From 1946, following pressure from Indian Buddhist societies, the government also allowed publication of literature in Nepal Bhasa after being censored.