Professor Radha Krishna Choudhary (15 February 1921 – 15 March 1985) was a historian, thinker, and writer of Bihar. He has contributed to the historical and archaeological studies of Bihar as well as to Maithili literature. He published numerous original researches on the history of Bihar and was acclaimed as a researcher. He was a professor at Ganesh Dutt College, Begusarai, Bihar and was a noted educationist. His languages of choice for academic works were Hindi and English, and for literary work was Maithili.

Political History of Japan (1868–1947). Bihar Publishers, Patna. 1948. English.
Maithili Sahityik Nibandhavali. Abhinav Granthagar, Patna. 1950. Maithili.
Sidhharth. Abhinav Granthagar, Patna. 2 ed. 1952. Hindi.
Studies in Ancient Indian Law. Motilal Banarsidas, Patna.1953. English.
Bihar - The Homeland of Biddhism. Sidharth Press, Patna. 1956. English.
History of Bihar. Motilal Banarsidas, Patna. 1958. English.
Select Inscriptions of Bihar. Smt Shanti Devi. 1958. English.
Mithilak Sankshipt Rajnaitik Itihas. Vaidehi Samiti, Darbhanga. 1961. Maithili.
Vratyas in Ancient India. Choukhamba Prakashan, Varanasi. 1964. English.
Prachin Bharat Ka Rajnaitik Evam Sanskritik Itihas (1200 Eisvi Tak). Bharati Bhavan Publishers, Patna. 1967. Hindi.
Sharaantidha. Maithili Prakashan, Calcutta. 1968. Maithili.
Vishva Itihas Ki Ruprekha (2 Volumes). Ajanta Press Patna. 1969. Hindi.
History of Muslim Rule in Tirhut(1207 - 1765). Choukhamba Prakashan, Varanasi. 1970. English.
Kautilya's Political Ideas and Institutions. Choukhamba Prakashan, varanasi. 1971. English.
Dhammapada - Maithili Translation. Maithii Prakashan Samiti, Calcutta. 1971. Maithili
A Survey of Maithili Literature, Shruti Publications, Delhi, 2010, ISBN No.978-93-80538-36-5
Mithilak Itihas, Shruti Publication, Delhi, 2010 (in Maithili Language), ISBN No.978-93-80538-28-0