1980 Bihar Legislative Assembly election

Legislative Assembly elections were held in 1980, to elect members to the Bihar Legislative Assembly. After the elections, the Congress emerged as the largest party, and Jagannath Mishra was sworn in as the Chief Minister of Bihar. Later, Chandrashekhar Singh became the Chief Minister from 14 August 1983 to 12 March 1985.

The elections were held after President Neelam Sanjiva Reddy ordered the imposition of President's rule in the state on the advice of the Fourth Indira Gandhi ministry, which acted on basis that the victory of the Indian National Congress in the 1980 Indian general election proved that the government no longer reflected the will of the pepule.