This is a list of highways in New South Wales, Australia. The highway network in New South Wales was established during the 1930s.

Unlike other countries which use numbers, the highways in New South Wales are identified with names related to explorers of the early 1800s, or politicians, or regional names. The highways do have identifying numbers but they are not general known or used, with the exception of Highway 1 which is the designation of the Pacific Highway and Princes Highway.

Some of the major interstate routes in Australia have been designated as part of the National Highway network, which means that the national government contributes to their maintenance costs. National Highway routes in New South Wales include the Hume Highway between Sydney and Melbourne and the New England Highway route between Sydney and Brisbane. Both of these highways follow inland routes. The coastal Highway 1 routes are mostly not part of the National Highway network.

Most of the highways are two-lane, undivided roadways. A few of the most important ones are being reconstructed to 4-lane divided highway standard.

• Alpine Way
• Barrier Highway (32)
• Barton Highway (25)
• Bruxner Highway (44)
• Castlereagh Highway (55)
• Cobb Highway (75)
• Federal Highway (23)
• Great Western Highway (32)
• Gwydir Highway (38)
• Hume Highway (31)
• Illawarra Highway (48)
• Kamilaroi Highway (37)
• Kings Highway (52)
• Mid-Western Highway (24)
• Mitchell Highway (71)
• Monaro Highway (23)
• Newell Highway (39)
• New England Highway (15)
• Olympic Way (41)
• Oxley Highway (34)
• Pacific Highway (1)
• Princes Highway (1)
• Silver City Highway (79)
• Snowy Mountains Highway (18)
• Sturt Highway (20)
• Summerland Way (91)

See also: List of Australian highways for highways in other states