Quenya is the Elvish language spoken in Valinor that J.R.R. Tolkien based largely on Finnish.
Tolkien developed Quenya as part of his extensive work on invented languages. In his mythology, it is associated especially with the High Elves and the ancient Elvish cultures of Aman. Its sound and structure were influenced strongly by Finnish, while Tolkien also drew on his knowledge of other languages, including Latin and Greek.
Quenya appears in names, poetry, ceremonial speech, and songs across Tolkien’s writings. It is often treated as a formal or ancient language rather than the everyday speech of all Elves in Middle-earth. Sindarin, another major Elvish language, was more widely used in many parts of Middle-earth during the later histories.
Quenya is sometimes loosely called “Elvish,” but that label covers several Tolkien languages. Quenya is the specific language connected with Valinor and the High Elves, while Sindarin has a different historical development and sound system.