Triathlete Daniela Ryf was named Swiss sportswoman of the year at the event aired by the Swiss Broadcasting Corporation.
Wawrinka, 30, has long played in the shadow of fellow countryman Roger Federer, although last year he won another Grand Slam event - the Australian Open.
This year the Lausanne native, currently ranked fourth in the world, had his best season yet beating world number one Novak Djokovic, of Serbia, to claim the crown at Roland-Garros.
En route to that win he defeated Federer in the quarterfinals.
He won four other titles in 2015, including the Chennai Open, and reached either the quarterfinals or the semifinals of the other Grand Slams.
Ryf, 28, from the canton of Solothurn, was awarded for being 2015 Ironman World Champion, while
remaining undefeated in Ironman competitions (four kilometres swimming, 180 kilometres cycling and 42.2 kilometres running).
She won the Hawaii Ironman competition and is also the 2015 Ironman 70.3 Ironman World Champion.
The pair were voted athletes of the year by TV viewers voting from a selection of nominated sports figures.