Communist Party of Nepal (Marxist) (1986–1991)

Communist Party of Nepal (Marxist), formed through the unification of Communist Party of Nepal (Manmohan), led by Manmohan Adhikari, and Communist Party of Nepal (Pushpa Lal), led by Sahana Pradhan, in 1987. CPN(M) was closely connected to Communist Party of India (Marxist).

CPN(M) was a member of the United Left Front and took part in the uprising against the authocratic regime in 1990. In 1991 CPN(M) unified with Communist Party of Nepal (Marxist-Leninist) to form the Communist Party of Nepal (Unified Marxist-Leninist). A sizeable section of the old CPN(M) leadership did however break away from CPN(UML) rapidly, reconstituting their own Communist Party of Nepal (Marxist)

Mass organizations of CPN (Marxist) included the Nepal Trade Union Centre and Nepal Progressive Students Union.