Nara Bahadur Karmacharya (Nepali: नरबहादुर कर्माचार्य; October 30, 1924 – July 24, 2013) was a Nepalese communist politician, belonging to Communist Party of Nepal (Unity Centre-Masal). Karmacharya was one of the most senior political leaders of the communist movement in Nepal, and at the time of his death was the only surviving founding member of the Communist Party of Nepal, which had been born in 1949.