Samuel Phillips Huntington (April 18, 1927 – December 24, 2008) was an influential conservative political scientist from the United States of America whose works covered multiple sub-fields of political science. He gained wider prominence through his Clash of Civilizations (1993, 1996) thesis of a post-Cold War new world order.

He was a member of Harvard's department of government from 1950 until he was denied tenure in 1959.From 1959 to 1962 he was an associate professor of government at Columbia University where he was also Deputy Director of The Institute for War and Peace Studies. Huntington was invited to return to Harvard with tenure in 1963 and remained there until his death. He was elected a Fellow of the American Academy of Arts and Sciences in 1965.Huntington and Warren Demian Manshel co-founded and co-edited Foreign Policy. Huntington stayed as co-editor until 1977.

His first major book was The Soldier and the State: The Theory and Politics of Civil-Military Relations, (1957) which was highly controversial when it was published, but today is regarded as the most influential book on American civil-military relations. He became prominent with his Political Order in Changing Societies (1968), a work that challenged the conventional view of modernization theorists, that economic and social progress would produce stable democracies in recently decolonized countries. As a consultant to the U.S. Department of State, and in an influential 1968 article in Foreign Affairs, he advocated the concentration of the rural population of South Vietnam as a means of isolating the Viet Cong. He also was co-author of The Crisis of Democracy: On the Governability of Democracies, a report issued by the Trilateral Commission in 1976. During 1977 and 1978, in the administration of Jimmy Carter, he was the White House Coordinator of Security Planning for the National Security Council.

Huntington died on December 24, 2008, at age 81 in Martha's Vineyard, Massachusetts.

Since its initial publication nearly fifteen years ago The Clash of Civilizations and the Remaking of World Order has become a classic work of international relations and one of the most influential books ever written about foreign affairs. An insightful and powerful analysis of the forces driving global politics, it is as indispensable to our understanding of American foreign policy today as the day it was published. As former National Security Adviser Zbigniew Brzezinski says in his new foreword to the book, it “has earned a place on the shelf of only about a dozen or so truly enduring works that provide the quintessential insights necessary for a broad understanding of world affairs in our time.” Samuel Huntington explains how clashes between civilizations are the greatest threat to world peace but also how an international order based on civilizations is the best safeguard against war. Events since the publication of the book have proved the wisdom of that analysis. The 9/11 attacks and wars in Iraq and Afghanistan have demonstrated the threat of civilizations but have also shown how vital international cross-civilization cooperation is to restoring peace. As ideological distinctions among nations have been replaced by cultural differences, world politics has been reconfigured. Across the globe, new conflicts—and new cooperation—have replaced the old order of the Cold War era. The Clash of Civilizations and the Remaking of World Order explains how the population explosion in Muslim countries and the economic rise of East Asia are changing global politics. These developments challenge Western dominance, promote opposition to supposedly “universal” Western ideals, and intensify intercivilization conflict over such issues as nuclear proliferation, immigration, human rights, and democracy. The Muslim population surge has led to many small wars throughout Eurasia, and the rise of China could lead to a global war of civilizations. Huntington offers a strategy for the West to preserve its unique culture and emphasizes the need for people everywhere to learn to coexist in a complex, multipolar, muliticivilizational world.