The 12401 / 12402 Nanda Devi AC Express train belonging to Indian Railways that runs between Kota Junction & Dehradun in India.

It stops at Hazrat Nizamuddin while following the same route and same timings from Ghaziabad Junction to Dehradun.Earlier this train used to run as New Delhi Dehradun AC Express from New Delhi from 25/09/2010 till 07/10/2014 and then was renamed as "Nanda Devi Express".This train used to originate from Hazrat Nizamuddin before 25/09/2010.

As with most train services in India, coach composition may be amended at the discretion of Indian Railways depending on demand.

It is hauled by a Tughlakabad Loco Shed based WAP-7 electric locomotive on its entire journey.

From 25 August 2019, it operate as 12401 / 12402 Dehradun Kota Nanda Devi AC Express with stoppage at Hazrat Nizamuddin instead of New Delhi.