The National Road (also known as the Cumberland Road) was the first major improved highway in the United States to be built by the Federal Government. About long, the National Road connected the Potomac and Ohio Rivers and was a gateway to the West for thousands of settlers. When rebuilt in the 1830s, the Cumberland Road became the first U.S. road surfaced with the macadam process pioneered by Scotsman John Loudon McAdam.

National roads can refer to various roads in several countries:

• : see
• : a specific road, see National Road No. 2
• : national roads, see Route nationale (France)
• : national roads, see National Roads
• : Greek Highways, known as Greek National Roads, see List of Greek roads
• : national primary and secondary roads, see National roads in Ireland
• : a type of roads administered by central government, also known as country roads, see national roads in Poland
• : a type of roads classified by several road plans since 1911, see Roads in Portugal
• : see National roads in Senegal
• : the primary road network administered by central government, see National Roads in South Africa
• : see National roads in Spain
• : a type of roads administered by central government, see Swedish national road
• : a specific road, see National Road
• : see