Oswald `Ossie` Griffiths is a Welsh rugby union and professional rugby league footballer of the 1930s, playing club level rugby union (RU) for Cwmavon RFC, and playing representative level rugby league (RL) for Wales, and at club level for Wigan, St. Helens (twice), and Halifax, as a {rlp|CE|SR}, or {rlp|LF-LK}, i.e. number 3 or 4, or 11 or 12, .....