The Saudi Railways Organization (SRO) (Arabic: المؤسسة العامة للخطوط الحديدية) is one of two state-owned companies that operates Saudi Arabia's rail network along with Saudi Railway Company. The SRO operates a network of railways with a total length of approximately 1,380 kilometers. The network consists of two main lines. A 449 km passenger line that links Dammam with Riyadh, and a 556 km freight line that connects the King Abdul Aziz Port in Dammam with Riyadh. Approval to merge Saudi Railways Organization and Saudi Railway Company was announced in February 2021.