The Malay language, also known locally as Bahasa Melayu or Bahasa Malaysia, is an Austronesian language spoken by the Malay people who reside in the Malay peninsula, southern Thailand, the Philippines, Singapore, central eastern Sumatra, the Riau islands, and parts of the coast of Borneo. It is an official language of Malaysia, Brunei and Singapore. It is also used as a working language in East Timor. It is very similar to Bahasa Indonesia, the official language of Indonesia, but differentiated in name for political reasons. The official standard for Malay, as agreed upon by Indonesia, Malaysia and Brunei, is the form spoken in the Riau Islands just south of Singapore, long considered the birthplace of the Malay language.

In Malaysia, the language is known as Bahasa Melayu or Bahasa Malaysia, which means the Malay, or Malaysian, language. The latter term, which was introduced by the National Language Act 1967, was predominant until the 1990s, when most academics and government officials reverted to the older term, which is used in the Malay version of the Federal Constitution. Indonesia adopted a form of Malay as its official language upon independence, naming it Bahasa Indonesia. In Singapore and Brunei it is known simply as Malay or Bahasa Melayu. The reason for adopting these terms is political rather than a reflection of linguistic distinctiveness, as standard Bahasa Malaysia and Bahasa Indonesia are mutually intelligible. However, many Malay dialects are not as mutually intelligible: for example, Kelantanese pronunciation is difficult even for some Malaysians to understand, while Javanese tends to have a lot of words unique to it which will be unfamiliar to other speakers of Malay. The language spoken by the Peranakan (Straits Chinese, a hybrid of Chinese settlers from the Ming Dynasty and local Malays) is a unique patois of Malay and the Chinese dialect of Hokkien, which is mostly spoken in the former Straits Settlements of Penang and Malacca. The use of this interesting language is dying out, however, with the Peranakan now choosing to speak either Hokkien or English.

Malay is normally written using the Roman alphabet, although a modified Arabic script called Jawi also exists. It is an agglutinative language, meaning that the meaning of the word can be changed by adding the necessary prefixes or suffixes. Root words are either nouns or verbs, e.g. masak (to cook) yields memasak (cooks, is cooking, etc.), memasakkan (cooks, is cooking for etc.), dimasak (cooked - passive) as well as pemasak (cook - person), masakan (cooking, cookery). Many initial consonants undergo mutation when prefixes are added: e.g. sapu (sweep) becomes penyapu (broom); panggil (to call) becomes memanggil (calls, is calling, etc.), tapis (sieve) becomes menapis (sieves, is sieving, etc.)