| Cabinet Name: | Second Hatta Cabinet Indonesian: Kabinet Hatta II |
| Cabinet Number: | 9th |
| Jurisdiction: | Indonesia |
| Flag: | Flag of Indonesia.svg |
| Flag Border: | true |
| Incumbent: | 1949 |
| State Head: | Sukarno |
| Government Head: | Mohammad Hatta |
| Members Number: | 17 ministers |
| Previous: | Hatta I Cabinet |
The Second Hatta Cabinet (Indonesian: Kabinet Hatta II) was Indonesia's ninth cabinet. It was formed after the Indonesian leadership, which had been imprisoned by Dutch forces, returned to the capital, Yogyakarta. It served from 4 August to 20 December 1949.
Due to Hatta's departure for the Dutch-Indonesian Round Table Conference, from 6 August 1949, via Presidential Decision No. 10/A/1949, Defense Minister Sultan Hamengkubuwana IX became acting Prime Minister. He also became acting Foreign Minister while Agus Salim was unable to perform his duties from 21 October. Effective from 1 December, Dr. Johannes Leimena replaced Minister of Health ad interim Dr. Surono, leaving only two state ministers.[1]
The cabinet was dissolved after a fundamental change in Indonesia's political system with the establishment of the United States of Indonesia, a result of the Round Table Conference. With the coming into force of the Federal Constitution on 20 December, the cabinet was automatically dissolved and replaced by the Republic of the United States of Indonesia Cabinet, also led by Hatta.[2]