Mandurah railcar depot is a Transperth railcar depot in the suburb of Mandurah. It is situated on Rafferty Road Southwest of the intersections of Mandurah Road, Kirkpatrick Drive, and Mandjoogoordap Drive immediately North of the terminus of the Mandurah line.
Mandurah railcar depot was constructed as part of the Mandurah line under the PTA's New Metrorail project and was opened along with the rest of the railway line on 23 December 2007. The depot is connected North of Mandurah station and is accessible by trains on both the up and down lines from the station via a series of crossovers.
The depot serves to stow and clean trains, with maininenance of Mandurah and Yanchep line trains occurring at Nowergup railway depot on the Yanchep line instead. The depot stows Transperth B-series & Transperth C-series train sets as Transperth A-series railcars are not used on the Mandurah or Yanchep lines. The depot has capacity for up to 17 three-car train sets.