Narayan Datt Tiwari (18 October 1925 – 18 October 2018) was an Indian politician who served as the 9th Chief Minister of Uttar Pradesh and 3rd Chief Minister of Uttarakhand from 2002 to 2007. He was first Indian Chief Minister who served for two states.He formerly in the Praja Socialist Party and later joined the Indian National Congress.

He was a three-time Chief Minister of Uttar Pradesh (1976–77, 1984–85, 1988–89) and to date remains the last Congress CM of Uttar Pradesh. He also served once as Chief Minister of Uttarakhand (2002–2007). Between 1986 and 1988, he served in Prime Minister Rajiv Gandhi's cabinet, first as Minister for External Affairs and then as Minister of Finance. He served as Governor of Andhra Pradesh from 2007 until 2009, when he resigned due to health and personal issues reasons.