The State of East Java (Indonesian: Negara Jawa Timur) was a federal state (negara bagian) formed on the Indonesian island of Java by the Netherlands in 1948. It subsequently became a component of the United States of Indonesia, but merged into the Republic of Indonesia on 9 March 1950.

• History of Indonesia
• Indonesian National Revolution
• Indonesian regions

• Proyek Penelitian dan Pencatatan Kebudayaan Daerah (1978), Sejarah Daerah Jawa Timur (History of the East Java Region) (in Indonesian), Departmen Pendidikan dan Kebudayaan
• Kahin, George McTurnan (1970), Nationalism and Revolution in Indonesia, Cornell University Press, ISBN 0-8014-9108-8.

• Bastiaans, W.Ch.J. (1950). Personalia van Staatkundige Eenheden (Regering en Volksvertegenwoordiging) in Indonesie. Djakarta: Kementerian Penerangan.