List of Online Music Song Contest languages

The following is a list of languages used in the Online Music Song Contest since its inception, including songs performed in finals and, since OMSC 3 and OMSC 15, respectively in semi-finals and pre-qualification rounds. There have never been rules concerning the language of the entries. During the contest's editions, there were songs performed only in national language(s) or songs performed entirely or partially in English.

Languages and their First Appearance
Languages are fully counted below when they are used in at least a chorus of a song.