The Spain international scored his second goal of the tournament with a towering header on Saturday against San Lorenzo as Real Madrid recorded a 2-0 win in the final in Marrakech.
Ramos's performances were good enough to see him named as the tournament's best player after the match, with Ronaldo finishing in second place. Auckland City captain Ivan Vucelich was handed the Bronze Ball; after guiding his side to a stunning victory in the third-place play-off.
"It's true, I risked my injury playing today, but I wanted to play this match," said the 28-year-old afterwards.
"This Club World Cup was hard to win for Real Madrid and we are so happy right now.
"I'm so proud to have helped with those goals, but this is a success for the whole squad."