Ten, I believe several have been named twice and one three times.
TIME magazine named him person of the year
Time magazine named Mr. Obama among the top 100 most influential people of 2012. Time magazine also named the president the "Person of the Year" for 2012, as the person who most influenced the news.
Adolf Hitler was named Time Magazine Person of the Year in 1938.
Franklin D. Roosevelt is the only person to have received the title 3 times - in 1932, 1934 and 1941.
Time Magazine
Time Magazine declared President Nasheed a 'Hero of the Environment'. In April 2010?
Time magazine names the computer the machine of the year.
Yes, in the United States, you can run for president twice even if you lose the first time. There is no limit on the number of times a person can run for president.
The Time Magazine Person of the Year in 1972 was Richard Nixon, who was the President of the United States at the time.
Time magazine
Time Magazine named Albert Einstein as the Person of the Century in 1999.