Keith W. Dayton (born March 7, 1949) is a retired lieutenant general in the United States Army who currently serves as the director of the George C. Marshall European Center for Security Studies in Garmisch-Partenkirchen, Germany.

Dayton served as the U.S. Security Coordinator for Israel-Palestinian Authority in Tel Aviv, Israel from December 2005 to October 2010.

He has also served as the Director of the Iraq Survey Group, as a senior member of the Joint Staff, and as U.S. Defense Attaché in the U.S. Embassy in Moscow, Russia.

Lt. Gen. Dayton served five years as the United States Security Coordinator (USSC) for Israel and the Palestinian Authority.

Lt. General Dayton was widely lauded for his "rebuilding" of the Palestinian National Security Service, with thousands of members training in neighboring Jordan.