Lee Ki-poong was a South Korean politician and Vice President. He was the Minister of National Defense and Mayor of Seoul. He was the leader of Liberal Party and supporter of Syngman Rhee. The Liberal Party held power from 1948 to 1960.
On March 15, 1960, South Korea held a presidential election. The Liberal Party, which included Syngman Rhee and Lee Ki-poong, won by a very wide margin and was accused of electoral fraud. As a result, the April Revolution took place in April 1960. President Rhee resigned on April 26, 1960. Lee Ki-poong's family also resigned. On April 28, 1960, in an annex of Rhee's mansion, Lee Ki-poong's first son, Lee Kang-seok shot Lee Ki-poong and his family and then killed himself in a murder–suicide.