The Portuguese forward is confident that La Decima is within the Blancos' reach this season and also discussed Sepp Blatter's recent comments about him
A tenth European Cup has eluded the Blancos since their last triumph in the competition in 2002, while they have stuttered in their Liga start this season and trail leaders Barcelona by six points after 14 matches.
Ronaldo, who was absent due to injury as Carlo Ancelotti's men recorded a 4-1 win over Galatasaray on Wednesday, has faith that the squad can take Barcelona and Bayern Munich's respective domestic and continental crowns.
"I think we can win both La Liga and the Champions League," the Portugal international, 28, told FourFourTwo.
Ronaldo, a frontrunner for the upcoming Ballon d'Or award, was recently embroiled in a public spat with Fifa president Sepp Blatter over comments the latter made comparing the ex-Manchester United attacker to Barca star Lionel Messi.
In his comments, Blatter also referred to Ronaldo as a "commander" for Madrid, but the Santiago Bernabeu star believes that the Spanish capital-based club has many authoritative figures in the squad.
"I’m not sure commander is the right word," he added. "We have a lot of leaders in the team - not just on the field but off it too."