MABBIM (Majlis Bahasa Brunei-Indonesia-Malaysia, "Language Council of Brunei-Indonesia-Malaysia") is a regional language organization which is formed to plan and monitor the development of the Malay language and its many national standards in the region. It consists of three countries - Brunei, Indonesia and Malaysia.
It was founded as MBIM (Majlis Bahasa Indonesia-Malaysia, "Language Council of Indonesia-Malaysia") on 29 December 1972 after a memorandum was being signed by Tun Hussein Onn who was the Education Minister of Malaysia and Mashuri Saleh who was the Education and Cultural Minister of Indonesia on 23 May 1972 in Jakarta. MBIM became MABBIM when Brunei joined this council on 4 November 1985. Singapore is as an observer.