John Albeni de Alben et Medve (Croatian: Ivan Alben; died March or May 1433) was a Hungarian prelate of German descent, who served as bishop of Pécs in the Kingdom of Hungary from 1410 to 1420 and as bishop of Zagreb in the Kingdom of Croatia within the Kingdom of Hungary from 1421 until his death. The family came into Hungary with Sigismund of Luxembourg. He was a son of Rudolf Albeni. He had five brothers, including John Jr., Peter and Henry, and three sisters.