Trevor Thomas (rugby)
 William Trevor 'Ocker' Thomas (born c. 1909 in Merthyr Tydfil – death unknown) was a Welsh dual-code international rugby union and professional rugby league footballer of the 1930s and '40s playing representative level rugby union (RU) for Wales and at club level for Abertillery RFC as a Flanker i.e. number 6 or 7 and playing representative level rugby league (RL) for Wales and at club level for Oldham (twice) and Wigan as a Second-row i.e.