The Belgian centre back was key as the club won the league title last year.
Kompany told his club’s website: “For me if you are good somewhere then there is no reason to look elsewhere.
“Man City as a project is not just a project of the owners or the people employed by the club; it is also my project.
“I have been here since the beginning and I have seen everything at the club change inside and out. I have the feeling that I have contributed to it too. It is good to know that I can be at City for another six years. It is a compliment that the club feels so highly of me.”
