The Wakefield line is a railway line and service in the West Yorkshire Metro and South Yorkshire Passenger Transport Executive areas of northern England. The Wakefield line is coloured yellow on maps and publications by West Yorkshire Metro. The line was electrified in 1989, between Leeds & Wakefield Westgate, as part of the programme to electrify the East Coast Main Line.

The service connects Leeds and Wakefield with Sheffield and Doncaster with the section of the line between Leeds and Doncaster forming part of the East Coast Main Line. The local stopping service is operated by Northern with services between Leeds, Wakefield and either Doncaster or Sheffield. Inter-city operators are London North Eastern Railway, East Midlands Railway and CrossCountry who provide services from Leeds to London and the South of England.

Some sections of the line are shared with the Huddersfield (orange) and Pontefract lines (light blue).

West Yorkshire "Metrocards" are available for all trains as far as South Elmsall on the Doncaster section of the line and to Moorthorpe on the Sheffield section.

At the time of the 1923 Grouping the line was owned by different railway companies:

Great Northern Railway (GNR) – with Wakefield Westgate station being jointly owned by the GNR and Great Central Railways (GCR).

West Riding and Grimsby Joint Railway (WRGJt) itself being of joint Great Northern Railway and Great Central Railway ownership.

Swinton & Knottingley Joint Railway itself being of joint Midland Railway (MidR) and North Eastern Railway (NER) ownership.