Whincup has more than three times as many wins as the next driver on the list, Red Bull Ampol Racing team-mate Shane van Gisbergen.
Van Gisbergen also won four races in 2020, including the season-ending Bathurst 1000.
The Bathurst breakthrough was his 29th win for Triple Eight since he joined in 2016, when he won in just his fourth start for the team. He previously won two races for Stone Brothers Racing in 2011, and nine races for Tekno Autosports between 2013 and 2015.
Third on the list is 2015 series champion Mark Winterbottom, who claimed all 38 of his career wins with Tickford Racing (formerly known as Ford Performance Racing and Prodrive Racing Australia) between 2006 and 2016.
It's both impressive and disappointing for Winterbottom; it shows how strong he was for the Ford team, but over four years have passed since his last victory, which came at Pukekohe.