The Muzaffarpur–Sitamarhi section is a railway line connecting Muzaffarpur to Sitamarhi in the Indian state of Bihar.

The 65.8 km (40.9 mi) line passes through the plains of North Bihar.

The foundation for this project was laid by the then railway minister, Ram Vilas Paswan, in 1997.

The remaining section between Muzaffarpur and Runni Saidpur took another two years due to civil objections.

From 13 July 2014, Sitamarhi–Delhi Anand Vihar Terminal Lichchavi Express was diverted to run via Muzaffarpur in the Muzaffarpur–Sitamarhi section which earlier ran via Darbhanga→Samastipur→Muzaffarpur.