John Hardy "Johnny" Isakson (born December 28, 1944) is the junior United States Senator from Georgia and a member of the Republican Party. Previously, he represented Georgia's 6th Congressional district in the House.
Born in Atlanta, Georgia, Isakson served in the Georgia Air National Guard (1966–1972) and graduated from the University of Georgia. He opened a real estate branch for Northside Realty and later served 22 years as the company's president. After a failed bid for the Georgia House of Representatives in 1974, he was elected in 1976. He served five terms, including two as minority leader. Isakson was the Republican candidate for governor of Georgia in 1990, but lost. Two years later, he was elected to the Georgia Senate and served two terms. He unsuccessfully ran in the Republican primary in the 1996 U.S. Senate elections.
After 6th District Congressman and Speaker of the House Newt Gingrich resigned, Isakson ran in the February 1999 special election to succeed him, winning by a 40-point margin. He ran for the U.S. Senate in November 2004 after conservative Democratic incumbent Zell Miller resigned. With the backing of much of Georgia's Republican establishment, he won both the primary and general elections by large margins. He is serving his second term after re-election to the Senate in 2010.