Juilliard v. Greenman, 110 U.S. 421 (1884), was a Supreme Court of the United States case in which issuance of greenbacks as legal tender in peacetime was challenged.

The tendered notes were originally issued under an act of Congress passed on February 25, 1862, and March 3, 1863, during the Civil War.

In an 8–1 decision resting largely on prior court cases, particularly the jointly-decided cases Knox v. Lee (1871) and Parker v. Davis (1871),[2] the power "of making the notes of the United States a legal tender in payment of private debts" was interpreted as "included in the power to borrow money and to provide a national currency".

He asserted that the meaning of the terms "to coin money" was certain: "It is to mould metallic substances into forms convenient for circulation and to stamp them with the impress of the government."

Finally, Justice Field wrote "For nearly three-quarters of a century after the adoption of the Constitution, and until the legislation during the recent civil war, no jurist and no statesman of any position in the country ever pretended that a power to impart the quality of legal tender to its notes was vested in the general government.