Now fully recovered from the knee injury that forced him to miss the World Cup last year, Vidic had no hesitation in signing the new deal.
"Playing in this team is a great privilege," he said. "This is such a great club and I am delighted to be able to extend my stay here.
"The fans and everyone at the club have been very special to me. I hope I can do my bit to bring the club even more trophies in the years ahead."