: The Development of Railway Service Quality as Public Transportation to Achieve Sustainable Transportation (Case Study in PT Kereta Api Indonesia Daerah Operasi VIII Surabaya). This research based on transportation problems in some big city in Indonesia caused by increasing number of car and motorbike transport without structured transportation system. Sustainable transportation is a concept to solve that problems. One way we can do to solve the problems is develop environmentally friendly transportation. Railway were proven as transportation that less pollution and less fuel consumption. So we need to pay attention in the quality of railway transportation in order to achieve sustainable transportation criteria. This research aims to describe, and analyze railway service quality especially in PT Kereta Api Indonesia Daerah Operasi 8 Surabaya. The result show that service quality of PT Kereta Api Indonesia has been better and close to sustainable transportation criteria especially in social aspect. But,it needs more attention in rolling stock and infrastructure, and official courtesy because it has impact in punctuality and comfort aspects.