Llewelyn Sherman Adams was an American businessman and politician, best known as White House Chief of Staff for President Dwight D. Eisenhower, the culmination of an 18-year political career that also included a stint as the 67th governor of New Hampshire. He lost his White House position in a scandal when he accepted an expensive vicuña coat.

The White House chief of staff is the head of the Executive Office of the President of the United States, a cabinet position in the federal government of the United States.