Wesley Kanne Clark, Sr., KBE (born December 23, 1944) is a retired general of the United States Army. Clark was valedictorian of his class at West Point, was awarded a Rhodes Scholarship to the University of Oxford where he obtained a degree in Philosophy, Politics and Economics, and later graduated from the Command and General Staff College with a master's degree in military science. He spent 34 years in the Army and the Department of Defense, receiving many military decorations, several honorary knighthoods, and a Presidential Medal of Freedom.

Clark commanded Operation Allied Force in the Kosovo War during his term as the Supreme Allied Commander Europe of NATO from 1997 to 2000.

Clark joined the 2004 race for the Democratic Party presidential nomination as a candidate on September 17, 2003, but withdrew from the primary race on February 11, 2004, after winning the Oklahoma state primary, endorsing and campaigning for the eventual Democratic nominee, John Kerry. Clark currently leads a political action committee — "WesPAC" — which was formed after the 2004 primaries, and used it to support numerous Democratic Party candidates in the 2006 midterm elections. Clark was considered a potential candidate for the Democratic nomination in 2008, but, on September 15, 2007, endorsed Senator Hillary Clinton. After Clinton dropped out of the Presidential race, Clark endorsed the then-presumptive Democratic nominee, Barack Obama. Clark currently serves as the co-chairman of Growth Energy, an ethanol lobbying group.