Vali Reza Nasr (Persian: ولی نصر, born 1960) is an Iranian-American academic and scholar, as well as Professor of International Politics at the Fletcher School of Law and Diplomacy of Tufts University.

An expert in contemporary Middle Eastern affairs and Islam and politics, in January, 2006, Nasr was named the Adjunct Senior Fellow for Middle Eastern Studies at the Council on Foreign Relations, a nonpartisan think-tank focusing on foreign policy. He is also a Senior Fellow with The Dubai Initiative, Belfer Center for Science and International Affairs at the Kennedy School of Government at Harvard University. He was named Carnegie Scholar in 2006.

The Wall Street Journal reported on February 9, 2009, that Richard Holbrooke has hired Nasr to advise the Obama Administration on US-Iran relations.