The 22633 / 22634 Thiruvananthapuram Central–Hazrat Nizamuddin Super fast Express is an express train belonging to Indian Railways – Southern Railway zone that runs between Thiruvananthapuram Central and Hazrat Nizamuddin in India.

It operates as train number 22633 from Thiruvananthapuram Central to Hazrat Nizamuddin and as train number 22634 in the reverse direction, serving the states of Kerala, Karnataka, Goa, Maharashtra, Gujarat, Madhya Pradesh, Rajasthan, Uttar Pradesh, Haryana & Delhi.

[2] As it is customary with most train services in India, coach composition may be amended at the discretion of Indian Railways depending on demand.

22633/ Thiruvananthapuram Central–Hazrat Nizamuddin Superfast Express covers the distance of 3,149 km (1,957 mi) in 48 hours (110 km/h) and in 51 hours 05 mins as 22634/Hazrat Nizamuddin–Thiruvananthapuram Central Superfast Express (58 km/h).

Both trains are hauled by a Ernakulam-based WDP-4D diesel locomotive from Thiruvananthapuram to Vadodara, after Vadodara both trains are hauled by a Vadodara-based WAP-7 electric locomotive until Hazrat Nizamuddin and vice versa.