William Henry Hopkin (1 July 1914 – 3 March 2002) was a Welsh rugby union, and professional rugby league footballer who played in the 1930s and 1940s. Hopkin was born in Newport, he played representative level rugby union (RU) for Wales, and at club level for Chepstow RFC, Gloucester RFC and Newport RFC, as a Wing, played club level rugby league (RL) for Swinton, and played association football (soccer) with Newport County reserves. He died in Newport aged 87.

International honours

Bill Hopkin won a cap for Wales (RU) while at Newport RFC in 1937 against Scotland.