Mariani Junction Railway Station is the major railway junction of Jorhat district in the Indian state of Assam on the Lumding–Dibrugarh section. It serves Jorhat city, Mariani and its surrounding area as well. The railway station is located at a distance of 18 km (11 mi) from Jorhat city.

• New Construction: EMD Diesel Locomotive Shed for 50 locomotives.
• Zonal Number (for its Trains) = 159XX

Mariani junction has three platforms, two double-bedded retiring rooms, computerized railway reservation system, parking facilities, vegetarian food stalls and free high speed Google RailWire WiFi.

NFR's upcoming second fully-fledged state of art dedicated EMD locomotive shed. With an aim to further upgrade the maintenance of diesel locomotives in the North Eastern region and to ease the pressure faced by the New Guwahati Diesel Locomotive Shed, the Indian Railways is now coming up with two more such sheds in Assam, which will be located at Mariani. A diesel locomotive shed is being constructed after being removed out of Railway Quarters and used to handle 50 EMD WDP4Ds & WDG4Ds Dual Cab locomotives, which have a range of 4,500 horsepower. There will be around 500 personnel, including engineers and artisans, in both the upcoming sheds. Afterwards, Tinsukia Division will have its own locomotive shed, as presently it has trip sheds. After that, Northeast Frontier Railway will get its fourth locomotive shed, the second locomotive shed in Assam after the New Guwahati shed, to ease pressure on Malda Town locomotive shed, Siliguri socomotive shed, and New Guwahati locomotive shed. The expected completion and commission is March 2018.

1. New Delhi–Dibrugarh Rajdhani Express (Via New Tinsukia)
2. New Delhi–Dibrugarh Rajdhani Express (Via Moranhat)
3. Guwahati–Dibrugarh Shatabdi Express
4. Dibrugarh–Kanyakumari Vivek Express
5. New Tinsukia–Amritsar Express
6. Dibrugarh–Chandigarh Express
7. New Tinsukia–SMVT Bengaluru Superfast Express
8. Dibrugarh–Lalgarh Avadh Assam Express
9. Dibrugarh–Lokmanya Tilak Terminus Superfast Express
10. Dibrugarh–Howrah Kamrup Express via Guwahati
11. Dibrugarh–Rajendra Nagar Weekly Express
12. Guwahati–Jorhat Town Jan Shatabdi Express
13. Guwahati–Dibrugarh Town Nagaland Express
14. Jorhat Town–Tinsukia Passenger
15. Guwahati–Mariani BG Express
16. Tinsukia–Lumding Express
17. Guwahati–Ledo Intercity Express
18. Rangiya–New Tinsukia Express
19. Silchar–New Tinsukia Barak Brahmaputra Express

• Mariani Junction railway station at the India Rail Info

Preceding station	Indian Railways			Following station
Terminus		Northeast Frontier Railway zone Lumding–Dibrugarh section		Nakachari towards ?
		Northeast Frontier Railway zone Furkating–Jorhat–Mariani branch line		Cinnamara towards ?