South Dynon Locomotive Depot is an Australian locomotive depot in Melbourne, purpose built for the servicing of diesel and electric locomotives by the Victorian Railways opening in July 1961.
It was built adjacent to the Dynon marshalling yards. It has two separate turntables for stabling broad and standard gauge locomotives. It was included in the sale of V/Line Freight to Freight Victoria in May 1999, and passed to Pacific National upon its acquisition of the company in August 2004. Today Downer EDi Rail and Bombardier V/Line Maintenance jointly operate the facility.
In 2005-2006 three XR and three XRB class locomotives were built at the depot.
Coordinates: 37°48′22″S 144°55′55″E / 37.806°S 144.932°E