The Cambodian language, also known as Khmer, is the official language of Cambodia and spoken by most of its population. It belongs to the Mon-Khmer branch of the Austroasiatic language family and has a rich history and literature. The Cambodian language has been influenced by Sanskrit and Pali, especially in the domains of religion, philosophy, and administration. It has also borrowed words from other languages, such as French, English, Vietnamese, Thai, and Chinese. 

The Cambodian language has a complex writing system that dates back to the 7th century and uses an alphabet derived from South India. The Cambodian language has several dialects that vary according to region and social group. Some of the most prominent dialects are Standard Khmer, spoken in Phnom Penh and central Cambodia; Northern Khmer, spoken in northeastern Thailand; Western Khmer, spoken in western Cambodia and adjacent parts of Thailand; and Southern Khmer, spoken in southern Vietnam and southeastern Cambodia.

French is still spoken as a second language by many older Cambodians, and is also the language of instruction in some schools and universities that are funded by the government of France. Since 1993, there has been a growing use of English, which has been replacing French as the main foreign language.