Jayaprakash Narayan, popularly referred to as JP or Lok Nayak, was an Indian independence activist, theorist, socialist and political leader.
Jayaprakash Narayan, also spelled Jai Prakash Narain, also called Jaya Prakash Narayan, Indian political leader and theorist.

Narayan was educated at universities in the United States, where he became a Marxist. Upon his return to India in 1929, he joined the Indian National Congress (Congress Party). In 1932 he was sentenced to a year’s imprisonment for his participation in the civil disobedience movement against British rule in India. Upon release he took a leading part in the formation of the Congress Socialist Party, a left-wing group within the Congress Party, the organization that led the campaign for Indian independence. He was imprisoned by the British again in 1939 for his opposition to Indian participation in World War II on the side of Britain, but he subsequently made a dramatic escape and for a short time tried to organize violent resistance to the government before his recapture in 1943. After his release in 1946 he tried to persuade the Congress leaders to adopt a more militant policy against British rule.

In 1948 he, together with most of the Congress Socialists, left the Congress Party and in 1952 formed the Praja Socialist Party. Soon becoming dissatisfied with party politics, he announced in 1954 that he would thenceforth devote his life exclusively to the Bhoodan Yajna Movement, founded by Vinoba Bhave, which demanded that land be distributed among the landless. His continuing interest in political problems, however, was revealed when in 1959 he argued for a “reconstruction of Indian polity” by means of a four-tier hierarchy of village, district, state, and union councils.

In 1974 Narayan suddenly burst on the Indian political scene as a severe critic of what he saw as the corrupt and increasingly undemocratic government of Prime Minister Indira Gandhi. Although he gained a following from students and opposition politicians, there was less enthusiasm from the masses. The next year a lower court convicted Gandhi of corrupt election practices, and Narayan called for her resignation. Instead, she declared a national emergency and jailed Narayan and other opposition leaders. In prison his health broke down. He was released after five months but never regained his health. When Gandhi and her party were defeated in elections in 1977, Narayan advised the victorious Janata party in its choice of leaders to head the new administration.