* Basque: This language, spoken in the Basque Country of Spain and France, is a language isolate, meaning it is not related to any other known language.
* Hungarian: This language belongs to the Ugric branch of the Uralic language family, which is unrelated to Indo-European.
* Finnish: This language, along with Estonian and several other languages spoken in Finland, Estonia, and Russia, belongs to the Finnic branch of the Uralic language family.
* Sami languages: These languages, spoken in northern Norway, Sweden, Finland, and Russia, are also part of the Uralic language family.
* Turkish: This language belongs to the Turkic language family, which is part of the Altaic language family, and is not related to Indo-European.
* Maltese: This language is a Semitic language, part of the Afro-Asiatic language family, and is not related to Indo-European.
These are the most prominent examples of non-Indo-European languages in Europe. It is important to remember that Europe is a linguistically diverse continent, and there are many other smaller languages spoken throughout the continent, including several languages that are part of the Indo-European family but are not widely known, such as Romani, which is part of the Indo-Aryan branch.