美国国道，正式名称为美国编号公路（United States Numbered Highways，简称为U.S. Routes或U.S. Highways），是美国公路系统的一部分，依据着统一的编号系统贯穿全美国，因此亦被称为联邦公路（Federal Highways），但由于各路线是由各州或地方政府来养护，因此此名称并不常用。虽然名称为「美国国道」，但是来自联邦政府的养护经费并没有与各州的州道有所不同。美国国道的路线以及编号是由美国各州公路暨运输官员协会（AASHTO）所规定，唯一来自联邦政府的影响是一名不具投票权的运输部代表。

The system of United States Numbered Highways (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these highways were coordinated among the states, they are sometimes called Federal Highways, but the roadways have always been maintained by state or local governments since their initial designation in 1926.