What is the language that the elf's speek in lord of the rings?

Answer 1

The language of Middle Earth is referred to by Tolkien as 'the common tongue'. For ease of the reader, all of the Common Tongue was written in English or the language the book has been translated into. You will also find several varieties of Elvish, dwarvish (no examples in the book, other than place names) and the Black Speech, and other lost languages. Much more information can be found in the Appendices of The Lord of the Rings.

Answer 2

Although the letters on the One Ring are Elvish, the language itself is the dark tongue of Mordor.
Well, there are several languages which appear written down in the LotR. But I'll just take a guess that you want the name of the script on the One Ring: it's Tengwar.

Answer 3

There is the Common Tongue which is represented by English in the book. There are two types of Elvish and the Dark Language used.

Answer 4

Tolkien's language was used.

Answer 5

The Elves speak Elvish.