Southern Shorthaul Railroad is an Australian rail freight services operator in New South Wales and Victoria.

Southern Shorthaul Railroad was established in December 2003, when the remains of Great Northern Rail Services were purchased from Chicago Freight Car Leasing Australia.

Current rail operations include grain haulage for Arrow Commodities, Emerald Grain, Newcastle AGRI Terminal, Allied Mills in NSW and VIC, George Weston Foods and Manildra Group hauling grain, wheat and flour as well as intermodal trains to Port Botany, intermodal operations for Fletchers International Exports, Grainforce, Swift Transport, DP World and Toll Group with 4 of these services terminating at Port Botany in NSW, coal services for Centennial Coal in NSW, infrastructure trains for Railcorp/Sydney Trains and Australian Rail Track Corporation/UGL Rail in NSW, locomotive and wagon maintenance services for Pacific National and V/Line in Victoria, EMU deliveries for Metro Trains Melbourne and various transfer workings in NSW and Victoria.

In 2014, SSR commenced operating grain services in New South Wales for George Weston Foods.

In 2017, SSR continued to expand, when it won the contract to perform maintenance on Pacific National broad gauge locomotives in Victoria.

That led to them serving Allied Mills facilities in Maldon, New South Wales and Kensington, Victoria.

In August 2020, CLF1, one of the company's latest acquisitions, was repainted into SSR black and yellow, the first locomotive to be painted into that livery in almost a decade.

The contract gives SSR 100% of the market share of domestic milling grain hauled by rail in NSW and Victoria.