Lewis "Llew"/"Lew" John Llewellyn (6 November 1881 – 1 February 1931) was a Welsh rugby union and professional rugby league footballer who played in the 1900s and 1910s.
He played club level rugby union (RU) for Newport RFC, as a centre, and representative level rugby league (RL) for Wales, and at club level for Ebbw Vale.