Nyamyn Jagvaral (Mongolian: Жагварал Нямын; 4 May 1919[1] – 19 September 1987[2]) was a Mongolian politician, statesman, economist, and academic who, as First Vice-Chairmen of the Presidium of the People's Great Khural, was acting Chairman (titular head of state) of the Mongolian People's Republic from August 23 to December 12, 1984 after the forced resignation of Yumjaagiin Tsedenbal for political and health reasons.
Between 1940 and 1945 he attended the Moscow Institute of Oriental Studies (the first Mongolian citizen to do so) receiving his Ph.D. in Economics in 1945.
From 1946 to 1953 he served as Vice-Chairman, Member of the Central Committee of the Revolutionary Party and in 1954 he was elected Deputy of the Great People's Khural.
Tsedenbal had been removed in a Soviet-sponsored move allegedly on the account of his old age and mental weakness but at least partly because of his opposition to the process of Sino-Soviet rapprochement.
Jambyn Batmönkh became the prime minister and general secretary of the MPRP and would assume the position of Chairmen of the Presidium of the People's Great Khural in December 1984.