J.R.R. Tolkien gave his major Finnish-influenced Elvish language the name Quenya.
Quenya is one of Tolkien’s best-developed constructed languages. Within his mythology, it is associated especially with the High Elves and with the ancient realms of Valinor and Númenor. Tolkien built its grammar, vocabulary, and sound system over many years, revising the language as his legendarium changed.
Finnish was a major inspiration for Quenya’s structure and sound, although Quenya is not Finnish and cannot be treated as a direct translation system. Tolkien also drew on Latin, Greek, and other historical languages. His interest in philology made language invention central to the creation of Middle-earth rather than a decorative afterthought.
Sindarin is the other famous Elvish language in Tolkien’s fiction, but it is a separate language with strong Welsh influence. Quenya appears in names, poems, ceremonial speech, and phrases such as “Namárië.” Tolkien’s linguistic work is one reason his fictional cultures have unusually detailed histories and identities.