J.R.R. Tolkien calls the Elvish script used for languages such as Quenya and Sindarin Tengwar.
Tengwar is a writing system created by Tolkien for the languages of his legendarium. The word is usually translated as “letters” or “characters” in Quenya. Its signs represent consonants and vowels through a carefully organized system of letter shapes and vowel marks.
The script is associated especially with Fëanor, the Ñoldorin Elf who devised it in Tolkien’s mythology. Tolkien used Tengwar for inscriptions and manuscripts, including the One Ring inscription, although that inscription is written in the Black Speech of Mordor rather than an Elvish language.
Tengwar is often confused with Cirth, another Tolkien writing system made from angular runes. Sarati is an earlier script attributed to Rúmil, while Angerthas refers to expanded runic arrangements. These are related parts of Tolkien’s invented writing history, but they are not interchangeable names.