Mosha is a work of science fiction written in Bengali by the novelist Premendra Mitra. This story was first published by Deb Sahitya Kutir, Kolkata, West Bengal, India, in the Puja Annual titled Alpana in 1945. Ghanashyam Das alias GhanaDa, the fictional character and the protagonist of the GhanaDa series of science-fiction stories appeared for the first time in this novel.

Premendra Mitra was an Indian poet, writer and film director in the Bengali language. He was also a practitioner of Bengali science fiction. His critique of humanity led him to believe that for it to survive, human beings had to "forget their differences and be united".