List of road routes in New South Wales

Road routes in New South Wales assist drivers navigating roads in urban, rural, and scenic areas of the state. Today, all numbered routes in the state are allocated a letter (M, A or B) in addition to a one- or -two digit number, with 'M' routes denoting motorways, 'A' routes denoting routes of national significance, and 'B' routes denoting routes of state significance. The route system includes the officially designated highways, urban and intercity motorways and arterial roads, and important cross-state roads that have not been declared highways.

Route numbers have been allocated to NSW roads since 1955. National Route 1 ('Highway 1') was one of the best known numbered national routes, likely because of its fame for circumnavigating the continent. The insignia of national routes was a five-sided black and white shield, chosen as it is the shape of the Australian national coat of arms.

To supplement the national route number system, three ring roads were introduced to Sydney in 1964. These were numbered 1, 3 and 5, with relatively (but not proportionately) increasing radii. While they were officially decommissioned in 1974, some old ring road 3 signs remained posted into the 1980s, and ring road 1 signs into the 1990s.

In 1973, a system of freeway numbering was introduced to the state to complement the national routes and ring roads. The shields were replicas of the red, white and blue U.S. Interstate Highway shields, and were numbered F1 to F8. The F1 was the Warringah Freeway, the F2 reserved for the Castlereagh Freeway, a corridor similar to today's M2 Hills Motorway, the F3 is the Pacific Motorway (Sydney–Newcastle section), the F4 was the western part of today's M4 Western Motorway (formerly Western Freeway), the F5 was the freeway section of National Highway 31, the F6 is the Southern Freeway, the F7 was reserved for a corridor similar to today's Cahill Expressway, Eastern Distributor and Bondi Junction Bypass and the F8 was a section of Wollongong's Northern Distributor, now part of State Route 60. Most of these routes were replaced with other numbers over the decades, and by the 1990s, only the F1, F3 and F6 were still marked as such, with simpler, green-on-white shields. None of these shields remain, but the F3 and F6 are still usually called by those names.

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