The indigenous languages of Malaysia belong to the Mon-Khmer and Malayo-Polynesian families. The national, or official, language is Malay which is the mother tongue of the majority Malay ethnic group. The main ethnic groups within Malaysia are the Bumiputera (which consist of Malays, Orang Asli, and, natives of East Malaysia), Arab Malaysians, Malaysian Chinese and Malaysian Indians, with many other ethnic groups represented in smaller numbers, each with their own languages. The largest native languages spoken in East Malaysia are the Iban, Dusunic, and Kadazan languages. English is widely understood and spoken within the urban areas of the country; the English language is a compulsory subject in primary and secondary education. It is also the main medium of instruction within most private colleges and private universities. English may take precedence over Malay in certain official contexts as provided for by the National Language Act, especially in the states of Sabah and Sarawak, where it may be the official working language. Furthermore, the law of Malaysia is commonly taught and read in English, as the unwritten laws of Malaysia continue to be partially derived from pre-1957 English common law, which is a legacy of past British colonisation of the constituents forming Malaysia. In addition, authoritative versions of constitutional law and statutory law (written laws of Malaysia) are continuously available in both Malay and English.
Malaysia contains speakers of 137 living languages, 41 of which are found in Peninsular Malaysia. The government provides schooling at the primary level in each of the three major languages, Malay, Mandarin and Tamil. Within Malay and Tamil there are a number of dialectal differences. There are a number of Chinese languages native to the ethnic Han Chinese who originated from Southern China, which include Yue, Min and Hakka Chinese.