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Le Roux received the award at the Free State Rugby Union's year-end function.
The Bok fullback was earlier also shortlisted for World Rugby's Player of the Year, but lost out to New Zealand lock Brodie Retallick.
Scrumhalf Sarel Pretorius was also rewarded for another season of good form. He won awards in no fewer than three categories - Currie Cup Player of the Year, Players’ Player of the Year and Super Rugby Player of the Year 2014.
Free State Rugby Union year-end function results:
• Under-19 Player of the Year 2014 - Jasper Wiese
• Women’s Rugby Player of the Year 2014 - Mirriam Nthlafu
• Under-21 Player of the Year 2014 - Carel-Jan Coetzee
• Vodacom Cup Player of the Year 2014 - Reinier Botha
• Currie Cup Player of the Year 2014 - Sarel Pretorius
• Players’ Player of the Year 2014 - Sarel Pretorius
• Super Rugby Player of the Year 2014 - Sarel Pretorius
• Cheetahs Rugby Player of the year 2014 - Willie Le Roux
New Springboks:
• Lood de Jager
• Oupa Mahoje
• Cornal Hendricks