Keith Mumby (born 21 February 1957), also known by the nickname of "Sir Keith", is an English former rugby league footballer who played in the 1970s, 1980s and 1990s, who most famously played for Bradford Northern between 1973 and 1993, and Sheffield Eagles and Wakefield Trinity, as a toe-end style (rather than round the corner style) goal-kicking fullback, or centre.
in the 1982 Yorkshire Cup Final during the 1981–82 season at Elland Road, Leeds on Saturday 2 October 1982, played stand-off, and scored 2-conversions in the 12–12 draw with Castleford in the 1987 Yorkshire Cup Final during the 1987–88 season at Headingley, Leeds on Saturday 17 October 1987, played fullback in the 11–2 victory over Castleford in the 1987 Yorkshire Cup Final replay during the 1987–88 season at Elland Road, Leeds on Saturday 31 October 1987, appeared as a substitute (replacing stand-off Ivan Henjak) in the 20–14 victory over Featherstone Rovers in the 1989 Yorkshire Cup Final during the 1989–90 season at Headingley, Leeds on Sunday 5 November 1989.
Mumby played fullback, and scored a conversion in Bradford Northern's 6–0 victory over Widnes in the 1979–80 John Player Trophy Final during the 1979–80 season at Headingley, Leeds on Saturday 5 January 1980, and appeared as a substitute (replacing centre Tony Anderson on 44-minutes) in the 15–8 defeat by Wigan in the 1992–93 Regal Trophy Final during the 1992–93 season at Elland Road, Leeds on Saturday 23 January 1993.
[6] Although born in Durham, Mumby was deemed eligible to play for Yorkshire, as he moved to the county at a young age.
He is one of only six players to be included in all three lists, the other being; Karl Fairbank, Trevor Foster, James Lowes, Robbie Paul and Ernest Ward.