Kotava (sometimes also spelled Kodava) is a proposed international auxiliary language (IAL) that focuses especially on the principle of cultural neutrality. The name means "the language of one and all", and the Kotava community has adopted the slogan "a project humanistic and universal, utopian and realistic". The language is mainly known in French-speaking countries and most learning materials for it are in French.

Kotava was invented by Staren Fetcey, a Canadian traveler and linguist, who began the project in the summer of 1975, on the basis of her study of previous IAL projects. The language was first made available to the public in 1978, and two major revisions were made in 1988 and 1993. Since then, the language has stabilized, with a lexicon of more than 17,000 basic roots. In 2005, a committee of seven members was established with the responsibility of guiding the future evolution of the language.