The United States fifty-dollar bill ($50) is a denomination of United States currency. The 18th U.S. president (1869-1877), Ulysses S. Grant, is featured on the obverse, while the U.S. Capitol is featured on the reverse. All current-issue $50 bills are Federal Reserve Notes.

The United States dollar is the official currency of the United States and several other countries. The Coinage Act of 1792 introduced the U.S. dollar at par with the Spanish silver dollar, divided it into 100 cents, and authorized the minting of coins denominated in dollars and cents. U.S. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color.