The mill or mil is a unit of currency, used in several countries as one-thousandth of the base unit. In the United States, it is a notional unit equivalent to a thousandth of a United States dollar. In the United Kingdom, it was proposed during the decades of discussion on decimalisation as a 1⁄1000 division of sterling's pound. While this system was never adopted in the United Kingdom, the currencies of some British or formerly British territories did adopt it, such as the Palestine pound and the Maltese lira.

The dime, in United States usage, is a ten-cent coin, one tenth of a United States dollar, labeled formally as "one dime". The denomination was first authorized by the Coinage Act of 1792.