Ronaldo, 36, had already won the prize for best scorer in the competition, with 29 goals, and was now considered by the Serie A organisers as the best striker in the 2020/21 season.
The captain of the Portuguese team spent the third season at Juventus, but this season they failed to win the title, which was won by Inter Milan.
The Serie A prize comes at a time when the sports press says that Ronaldo will be able to leave Juventus, despite having another year of contract with the club.
The former player from Sporting, Manchester United and Real Madrid is currently on an internship at the service of the Portuguese team, which prepares for the participation and defence of the title in the final stage of Euro2020.
Gigi Donnarumma (AC Milan) won the prize for best goalkeeper, while Argentine Cristian Romero (Atalanta) was considered the best defender and Nicolò Barella (Inter Milan) the best midfielder.
Serbian striker Dusan Vlahovic of Fiorentina won the award for best under-23 player.