National Highway 7, commonly referred to as NH 7, is major North-South National Highway in India that runs through the states of Uttar Pradesh, Madhya Pradesh, Maharashtra, Andhra Pradesh, Karnataka, and Tamil Nadu. The highway connects several important Indian cities such as Varanasi, Jabalpur, Nagpur, Hyderabad, Bangalore and Madurai. A major part of NH 7 covers the North-South corridor of NHDP and it is officially listed as running over 2369 km from Varanasi to Kanyakumari. It is the longest national highway in India.

A major stretch of NH 7 from Lakhnadon to Kanyakumari (1828 km) has been selected as a part of the North-South Corridor and approximately 94 km stretch of NH 7 between Bengaluru and Krishnagiri has been selected as a part of the Golden Quadrilateral by the National Highways Development Project.

Four laning of this project was executed by SEW Infrastructure Ltd and is expected to ease the traffic congestion and provide a tremendous boost to trade and commerce in the region. This project has been build to world-class standards. SEW has also constructed a SIX-lane state-of-Art toll plaza for toll collection. This project was inaugurated by Mr.T.R.Balu - Union Minister for Surface Transport on 11th February 2009.