| Tamil Nadu Sampark Kranti Express | |
| Type: | Sampark Kranti Express |
| First: | [1] |
| Operator: | Southern Railways |
| Start: | (MDU) |
| Stops: | 13 |
| End: | (NZM) |
| Distance: | 2676km (1,663miles) |
| Journeytime: | 42 hours approximately |
| Frequency: | Bi-weekly |
| Class: | AC 2 Tier, AC Three Tier, Sleeper class, General Unreserved |
| Seating: | Yes |
| Sleeping: | Yes |
| Catering: | Available |
| Observation: | Large windows |
| Trainnumber: | 12651/12652 |
| Routenumber: | 7 / 7A[2] |
| Speed: | 63km/h average with halts |
| Maintenance: | Depot |
| Map State: | collapse |
The 12651 / 12652 Tamil Nadu Sampark Kranti Express is one of the Sampark Kranti Express trains, operating on India's broad-gauge network that connects in Tamil Nadu and in New Delhi, a distance of approximately in 42 hours approximately, maintaining an average speed of 63km/h. From April 2021, it runs with newly manufactured highly refurbished LHB rakes.
This bi-weekly train was introduced to provide a quicker journey from New Delhi to Tamil Nadu. Southern Railway began operating the train on 19 September 2004. It shares its rakes with 22623/22624 Madurai–Chennai Egmore–Madurai Bi-weekly Superfast Express (via Dindigul, Trichy, Thanjavur, Viluppuram).
It runs from Madurai Junction via,,,,,,,,,,,, to Hazrat Nizamuddin.
This route is fully electrified and it is hauled by a Royapuram-based WAP-7 locomotive from end to end.