Lee Ru-ma (born February 15, 1978), better known by his stage name Yiruma, is a pianist and composer from South Korea.
He began playing the piano at the age of five and moved to London when he was eleven, in 1988, to study at The Purcell School of Music. He held dual citizenship, South Korean and British, until 2006, when he gave up his UK citizenship to serve in the South Korean Navy.