United States Treasury securities, also called Treasuries or Treasurys, are government debt instruments issued by the United States Department of the Treasury to finance government spending, in addition to taxation. Since 2012, the U.S. government debt has been managed by the Bureau of the Fiscal Service, succeeding the Bureau of the Public Debt.

A government bond or sovereign bond is a form of bond issued by a government to support public spending. It generally includes a commitment to pay periodic interest, called coupon payments, and to repay the face value on the maturity date.