Master key may refer to:
- a type of key, see Key (lock)
- a skeleton key
- Master Key, a game on the gameshow The Price is Right, see List of The Price Is Right pricing games
Famous quotes containing the words master and/or key:
“The master minds of all nations, in all ages, have sprung in affluent multitude from the mass of the nation, and from the mass of the nation only—not from its privileged classes.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)
“Every revolution was first a thought in one man’s mind, and when the same thought occurs in another man, it is the key to that era.”
—Ralph Waldo Emerson (1803–1882)