Ronaldo has denied reports linking him with a move to Spanish giants Real Madrid.
“I intend to win as many trophies as I can with this club for as long as possible,” he said.
“We are a young team and the future is good.
“I want to be here and be part of the success that lies ahead. It is great to be part of such a fantastic club.
“I intend to be here for years and years.”
United have already won the Club World Cup this season, but can still win the Premier League, Champions League, FA Cup and Carling Cup.
“We are going to try and win the lot, and why not? In my head I know it is possible,” added Ronaldo.
“The priority is to retain the Premier League and Champions League and we have the players, the spirit and desire to do more.
“We want to make history by winning all five trophies.”