Rohri-Chaman Railway Line () (also referred to as Main Line 3 or ML-3) is one of four main railway lines in Pakistan, operated and maintained by Pakistan Railways. The line begins from Rohri Junction station and ends at Chaman station. The total length of this railway line is . There are 35 railway stations from Rohri Junction to Chaman on this line and is famous for passing through the historic Bolan pass. This line incorporates part of the historic Sind-Pishin State Railway.