Born on May 16, 1993, South Korean singer-songwriter and actress IU is 23 years old. IU is no doubt close to 25 years old. But in Korea, as long as children have been on this earth for 24 months (including the 9 months before birth), they're 24. So she might be considered 23 by Western standards--even though you wouldn't want to make assumptions about people's age based on arbitrary systems like that! One interesting thing about her real name: do you know what it is? Her name is Lee Ji-eun. And IU is only a stage name for her because her dream as an idol singer was to become accessible "to one man, and women". Is that a cool name or what?