"It's also true that the manager always has an important role to play. It was a great season for me and for my club and the coach was important for me because I learned a lot for him," he added.
"His experience over so many years is of paramount importance - it's a privilege to have such a great club manager.
"This is the climax of a fantastic era for me. I'm happy and proud about what has been done by my team and what we have won.
"I am lucky to be part of the history of a club like Manchester United."
The coaches and captains of 155 national teams took part in the voting for the award, with Messi finishing second ahead of Torres, Kaka and Xavi.
Ronaldo is only the second Portuguese player to pick up the Fifa honour following Luis Figo's triumph in 2001.
Meanwhile, Brazil forward Marta, who is joining Los Angeles Sol in the new women's professional league in the United States, collected her third successive women's award - equalling the record set by German Birgit Prinz.
"This is an amazing achievement for me," said the 22-year-old, who has spent five years at Swedish club Umea and who was part of the Brazil team that finished as runners-up to the United States in the 2008 Olympics in Beijing.
"This game has given me so many great moments of joy. This award is fantastic and I'd like to thank you all very much."
England and Arsenal Ladies striker Kelly Smith was one of the five nominees for the title.
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