The Standing Liberty quarter is a 25-cent coin that was struck by the United States Mint from 1916 to 1930. It succeeded the Barber quarter, which had been minted since 1892. Featuring the goddess of Liberty on one side and an eagle in flight on the other, the coin was designed by American sculptor Hermon Atkins MacNeil.

The quarter, formally known as the quarter dollar, is a denomination of currency in the United States valued at 25 cents, representing one-quarter of a dollar. Adorning its obverse is the profile of George Washington, while its reverse design has undergone frequent changes since 1998. Since its initial production in 1796, the quarter dollar has held a significant place in American numismatics, with consistent production since 1831.