Murad II Kodja or Amurathes II (Ottoman Turkish: مراد ثانى Murād-ı sānī, Turkish: II. Murat) was the Sultan of the Ottoman Empire from 1421 to 1451 (except for a period from 1444 to 1446 when his son Mehmed II reigned).
Murad II's reign was marked by the long war he fought against the Christian feudal lords of the Balkans and the Turkish emirates in Anatolia, a conflict that lasted 25 years. He was brought up in Amasya, and ascended the throne on the death of his father Mehmed I. His mother was Valide Sultan Emine Hatun (daughter of Suleyman Bey, ruler of Dulkadirids), his father's third consort. Their marriage served as an alliance between the Ottomans and this buffer state.