The Himalayan Expressway is a 27.5 km stretch of highway in India that runs through the Shivaliks at the trijunction of Haryana, Punjab, and Himachal Pradesh.

It is part of the Chandigarh–Shimla Expressway which connects Zirakpur in Punjab to Parwanoo in Himachal Pradesh.

[1] It forms part of National Highway 5.

Although the road cuts short the distance between Zirakpur and Parwanoo by only 3 km, but it helps save fuel and cuts time of travel between Delhi and Shimla by 1 hour to 7 hours, by helping commuters bypass the congested towns of Pinjore and Kalka.

Geologists argued that the cutting of the mountains for highway construction had destabilized the slopes.