The 12171 / 72 Lokmanya Tilak Terminus Haridwar AC Superfast Express is a Superfast Express train belonging to Indian Railways - Central Railway zone that runs between Lokmanya Tilak Terminus and Haridwar Junction in India.

As is customary with most train services in India, Coach Composition may be amended at the discretion of Indian Railways depending on demand.

The 12171 Lokmanya Tilak Terminus Haridwar AC Superfast Express covers the distance of 1771 kilometres in 29 hours 00 mins averaging 61.31 km/h (38 mph) & in 29 hours 15 mins as 12172 Haridwar Lokmanya Tilak Terminus AC Superfast Express averaging 60.55 km/h (38 mph).

As the average speed of the train is above 55 km/h (34 mph), as per Indian Railways rules, its fare includes a superfast surcharge.

With Central Railways progressively moving towards a complete changeover from DC to AC traction, it is now hauled by a Bhusaval based WAP 4 from Lokmanya Tilak Terminus until Hazrat Nizamuddin after which a Tughlakabad based WDM 3A powers the train for the remainder of the journey.