"I'm really happy here at City, it's a second home to me, so it was an easy decision to stay for the long-term," Dzeko told City's official website.
"I knew from the beginning when I started here that I wanted to stay for a long time - I can't see any place better than here.
"I'm settled perfectly to life here, I know my teammates, the club, the team, very well and I feel like I can improve even more.
"Over the last three and a half years we've made history together but I feel like we are only at the start of something really special.
"There are still so many objectives and goals that I want to reach from my career in the game and I believe that I am in the perfect place to achieve them all.
"The fans have always shown so much faith in my ability and I feel so much love, both from supporters inside Manchester and from those all over the world."
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