Chris, who retired from the game in May after amassing 109 caps, will receive an honorary doctorate of science tomorrow.
Tom, whose celebrated Leith restaurant, The Kitchin, was awarded a Michelin star when he was just 29, will receive an honorary doctorate of arts today.
They will join around 2000 Edinburgh Napier students graduating at ceremonies held at the Usher Hall.
Chris scored 22 tries, kicked 90 conversions, landed three drop-goals and kicked 170 penalties in a long and distinguished international career. He amassed 809 points from 109 international appearances.
Chris, who has been deployed at full-back, wing and stand-off by a succession of managers, was the youngest Scot to earn 50 caps, against South Africa in 2004. He made his Scotland debut against Spain at the 1999 World Cup and his last outing came against England at last year’s World Cup in New Zealand.
Tom has gained experience at some of the world’s most prestigious restaurants, including La Tante Claire in London and the Guy Savoy in Paris. When he opened The Kitchin in Leith in 2006, he gained a Michelin star within six months, making him the youngest chef to achieve such an accolade.