Jacqueline "Jackie" Lee Kennedy Onassis was an American writer, book editor, and socialite who served as the first lady of the United States from 1961 to 1963, as the wife of President John F. Kennedy. A popular first lady, she endeared the American public with her devotion to her family, dedication to the historic preservation of the White House, the campaigns she led to preserve and restore historic landmarks and architecture along with her interest in American history, culture and arts. During her lifetime, she was regarded as an international icon for her unique fashion choices, and her work as a cultural ambassador of the United States made her very popular globally.

First Lady of the United States (FLOTUS) is the title held by the hostess of the White House, usually the wife of the president of the United States, concurrent with the president's term in office. Although the first lady's role has never been codified or officially defined, she figures prominently in the political and social life of the United States. Since the early 20th century, the first lady has been assisted by official staff, known as the Office of the First Lady and headquartered in the East Wing of the White House.