Geojilmi of Geumgwan Gaya (d. 346, r. 291-346) was the fourth ruler of Geumgwan Gaya, a Gaya state of ancient Korea. He was the son of King Mapum and Queen Hogu.
King Geojilmi married Queen Aji, who was the graddaughter of a high official (agan) named Agung. She gave birth to his heir, Ipum.