The Indonesian language, the national language of Indonesia, is also widely used and taught in schools.

Namla is a recently discovered and poorly documented Papuan language of Indonesia.

Awye could be one of two Papuan languages of Indonesia:

Indonesian slang language is not an official language of Indonesia.

It is very similar to the language of Indonesia (Bahasa Indonesia).

Vitou is a Papuan language of Indonesia used mainly by older adults.

Maremgi, also known as Dineor, is a Papuan language of Indonesia.

He limited his use of the local languages of Indonesia, including his native language Batak.

Saponi is nearly extinct a Papuan language of Indonesia.

Mapia is a possibly extinct Micronesian language of Indonesia.