|Full name||David Idwal Davies|
|Born||10 November 1915
Llanelli district, Wales
|Died||7 July 1990
David Idwal Davies (10 November 1915 – 7 July 1990) was a Welsh dual-code international rugby union and professional rugby league footballer of the 1930s and '40s, playing representative level rugby union (RU) for Wales, and at club level for Swansea RFC, as a Centre, i.e. number 12 or 13, and playing representative level rugby league (RL) for Wales, and at club level for Leeds, as a Centre, i.e. number 3 or 4.
Idwal Davies won a cap for Wales (RU) while at Swansea RFC in the 0-3 defeat by England at Twickenham Stadium, London on Saturday 21 January 1939, and won a cap for Wales (RL) while at Leeds in the 8-18 defeat by England at Central Park, Wigan on Saturday 10 March 1945.
- Williams, Graham; Lush, Peter; Farrar, David (2009). The British Rugby League Records Book. London League. pp. 108–114. ISBN 978-1-903659-49-6.
- "Birth details at freebmd.org.uk". freebmd.org.uk. 31 December 2011. Retrieved 1 January 2012.
- "Statistics at scrum.com". scrum.com. 31 December 2011. Retrieved 1 January 2012.