David "Dai" Thomas (15 February 1879 – 1958) was a Welsh professional rugby league footballer who played in the 1900s.
He played at representative level for Other Nationalities, and at club level for Oldham, as a forward.
[2] David "Dai" Thomas won a cap, and scored his team's first try, playing as a forward for Other Nationalities in the 9–3 victory over England at Central Park, Wigan on Tuesday 5 April 1904, in the first ever international rugby league match.
[3][4] Dai Thomas played in Oldham's victory in the Championship during the 1904–05 season.
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