Quenya

The tongue of the High Elves of Valinor, the first to be recorded in writing. It was never widely used in Middle-Earth except among the Noldor; the related Eldarin language, Sindarin, was more commonly spoken.

By the Third Age, Quenya had become, in Middle-Earth, a language used only on formal or state ocassions by the Elves and the descendants of the Numenoreans.