Tomoji Tanabe is the oldest man in the world. He was born in 1895 and celebrated his 113th birthday on September 18, 2008.USA Today: World's oldest man has 113th birthday in Japan (September 18, 2008) Guinness World Records certified Tanabe's status as the world's oldest man in 2007. Tanabe is from Japan, one of the countries with the longest life span averages.CBS News: 111-Year-Old Cited As World's Oldest Man (June 18, 2007)