Narayan Dutt Tiwari (born October 18, 1925) is an Indian politician. He is the governor of the state of Andhra Pradesh and was previously chief minister of Uttar Pradesh and Uttaranchal. He is a member of the Indian National Congress.

N.D. Tiwari was the chief minister of Uttar Pradesh three times: from January 1976 to April 1977, from August 1984 to September 1985 and from June 1988 to December 1988. He did a lot of work in developing the road and bridge network of U.P. - the network expanded significantly. Usually he had a good respect as a fair administrator. His inaction during the 1984 Sikh riots is considered by some to be a blot on his career. Many cities in U.P. (like Kanpur) continued to burn while the government did nothing to stop the riots.

He served as a union minister in several portfolios in the 1980s: he was named minister of Industries in September 1985 and, in addition to that portfolio, became minister of Petroleum in 1986. He then served as Mmnister of Foreign Affairs from October 1986 until July 1987, at which point he became Minister of Finance and Commerce, serving in that position until June 1988, when he became chief minister of Uttar Pradesh for the third time. He was a contender to be Prime Minister of India in the early 1990s but was beaten by the late Narsimha Rao. One of the key reasons was that he lost the Lok Sabha elections by a mere 800 votes. He later served as the chief minister of Uttaranchal, which was carved out of Uttar Pradesh, from 2002 through 2007. He offered to resign on March 5, 2006, citing his age. He left office in March 2007 following setbacks for his party in the state elections.

Tiwari was appointed governor of Andhra Pradesh on August 19 2007 and was sworn in on August 22.