Don Valley is a parliamentary constituency, consisting of the southern Borough of Doncaster, from Conisbrough to Hatfield. Created in 1915, it was long a coal mining stronghold. It is currently represented by the Labour MP Caroline Flint and is considered a safe Labour seat.
- Tom Williams , Labour
- Richard Kelley , Labour ( - 1979)
- Michael Welsh , Labour (1979 - 1983)
- Martin Redmond, Labour (1983 - 1997)
- Caroline Flint, Labour (1997 - )
