Bahasa Indonesia is Indonesia Language. Based on the Malay trade dialect, Bahasa Indonesia is the national language of the Republic of Indonesia. It unites the over 237 million people of Indonesia (May 2010), whose native tongue may be one of the over 300 distinct languages or regional dialects. Older people may speak some Dutch and English is the foreign language of choice for business, tourism and study.

For More You can visit this site : http://www.expat.or.id/info/bahasa.html