William "Billy" J. Williams (birth unknown â death unknown) was a Welsh professional rugby league footballer who played in the 1900s. He played at representative level for Wales, and at club level for Halifax, as a .
Williams was signed by Halifax from rugby union club Pontypool RFC in 1906. He played regularly for Halifax between 1906 and 1912. His most prolific season came in 1908âÂÂ09 when he scored 49 tries, making him the season's joint-leading try scorer with Joe Miller.
Billy Williams won 4 caps for Wales in 1908âÂÂ10 while at Halifax.