N. V. Krishnaiah (also known as NVK) was a communist politician from Andhra Pradesh, India. He was a municipal councillor in Nellore, member of the Andhra Pradesh legislature, president of the Indian Federation of Trade Unions and a central leader in the Communist Party of India (Marxist-Leninist).
NVK was born in 1930 in Yataluru village, Venkatagiri mandal, Nellore district. He completed high school in Venkatagiri and then moved to Nellore to join V.R. College. At V.R. College he joined the students movement and later became a member of the Communist Party in 1952.
He then returned to Venkatagiri and began to work in the peasant front of the party. In 1957 he shifted his activities to Nellore and became a trade union organizer amongst motor workers. In both cases he led militant campaigns and came into conflicts with landlords and private bus company owners.
When the Communist Party of India was divided, NVK sided with the leftist tendency. He became the secretary of the Nellore town committee and a member of the Nellore district committee of the new party, the Communist Party of India (Marxist). In 1964 he was elected to the Municipal Corporation of Nellore.
NVK contested the 1967 Andhra Pradesh Legislative Assembly election as a CPI(M) candidate in the Nellore constituency. He came second with 11951 votes (25.89%). He was defeated by the Jan Sangh candidate M. R. Annadata.
At the same time, the CPI(M) in Andhra Pradesh faced another split. Large sections of the regional party cadres began to condemn the CPI(M) leadership as 'neo-revisionist'. Led by T.N. Reddy, the radical elements rallied around the Andhra Pradesh Coordination Committee of Communist Revolutionaries. NVK joined the APCCCR, and as a consequence he later resigned from his position as a municipal councillor.