State of East Java

{{Short description|1948–1950 Dutch client state then state of Indonesia}}

{{Infobox former subdivision

| conventional_long_name = State of East Java

| native_name = Negara Jawa Timur

| common_name = Jawa Timur

| subdivision = Federation

| nation = Indonesia

| status_text = State of the United States of Indonesia

| p1 = Republic of Indonesia

| flag_p1 = Flag of Indonesia.svg

| s1 = East Java

| flag_s1 = Flag of Indonesia.svg

| image_flag = Flag of Various Autonomous Indonesian States.svg

| flag_type = Flag

| image_coat =

| image_map = East Java in the United States of Indonesia.svg

| image_map_caption = East Java in the United States of Indonesia

| government_type =

| title_leader = Head of State

| leader1 = R.T.P. Achmad Kusumonegoro

| capital =

| era = Cold War

| event_pre =

| date_pre =

| event_start = State of East Java established

| date_start = 26 November

| year_start = 1948

| event_end = Merged with the Republic of Indonesia

| date_end = 25 February

| year_end = 1950

| life_span = 1948 – 1950
{{small|(Sovereign state until 27 December 1949)}}

}}

The State of East Java ({{langx|id|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.