Cindy McCain is the wife of American John McCain.
Cindy Lou Hensley McCain ( born May 20 , 1954 ) is an American businesswoman , philanthropist , and humanitarian , and the wife of long-time United States Senator and 2008 Republican presidential nominee John McCain of Arizona . John Sidney McCain III ( born August 29 , 1936 ) is an American politician who currently serves as the senior United States Senator from Arizona .