Crofton Depot is a traction maintenance depot located in Crofton, West Yorkshire, England. The depot is situated on the Wakefield Line and Pontefract Line at the eastern end of Crofton Junction and is located near the now demolished Crofton railway station. A few operators store trains overnight for early morning services at this depot those being CrossCountry, Grand Central and TransPennine Express.

The depot was opened in 2001 by Bombardier Transportation. The depot was upgraded in 2006 and has a 2-road shed and various external sidings with carriage washer and fuelling/CET point. It was used for maintaining Class 170s for TransPennine Express. This has since ceased.^[3] The Depot is also a servicing facility for CrossCountry Trains Yorkshire operations (Leeds, Sheffield and York terminating trains) and Grand Central Yorkshire operations (Bradford terminating trains). Hull Trains used the Depot for servicing their Class 180 when maintenance transferred from Old Oak Common Depot.

An additional siding was added to the depot in early/mid 2018 to increase depot stabling capacity resulting from timetable changes. The depot is now owned by Alstom after they bought out Bombardier Transportation.

As of 2023, the depot has an allocation of Class 170 Turbostars for Northern Trains. However, Class 220 Voyagers and Class 180 Adelantes visit the depot for servicing.