National Highway 91 (NH 91) is a National Highway in India entirely within the state of Uttar Pradesh. NH 91 links Ghaziabad, on the outskirts of New Delhi to Kanpur. The total length of NH 91 runs to 405 km (252 mi). Starting from NH 2 in Kanpur it runs northwest and ends at Ghaziabad near to Delhi at NH 24.
The highway passes through Kalianpur, Bilhaur, Makkanpur, Kannauj, Gursahaiganj, Chhibramau, Bewar, Bhogaon, Kurawali, Etah, Sikandra Rao, Aligarh, Arnia, Khurja, Bulandshahr, Sikandrabad and Dadri.