The Barrier Highway is a State highway in New South Wales, Australia. The Barrier Highway starts at Nyngan where it joins the Mitchell Highway. It heads west past Hermidale and Boppy Mountain to Cobar, a mining town. It then heads to Wilcannia where it crosses the Darling River. It then heads west to Broken Hill.

The Barrier Highway also links Broken Hill into South Australia. The area traversed by the Barrier Highway is remote and very sparsely settled.

See also

• List of Australian highways
• List of New South Wales highways
• List of South Australian highways