"We've gone through a very difficult time," Obama told the magazine. "The American people have rightly been frustrated at the pace of change, and the economy is still struggling, and this president we elected is imperfect, and yet, despite all that, this is who we want to be. That's a good thing."
Last year, Time honoured "The Protester," citing dissent across the Middle East that spread to Europe and the United States, saying the protesters reshaped global politics.
Time's "Person of the Year" is the person or thing that has most influenced the culture and the news during the past year for good or for ill.
In 2010, Facebook founder and CEO Mark Zuckerberg received the honour.
Other previous winners have included Federal Reserve Chairman Ben Bernanke, Bono and President George W Bush.
- AP