The fictional script J.R.R. Tolkien used for many Middle-earth inscriptions is called Tengwar.
Tengwar is a writing system created by Tolkien for the languages of his legendarium. The word is Quenya and is commonly translated as “letters” or “characters.” Its letter shapes and modes allow it to represent different languages, including Quenya and Sindarin, rather than functioning as a single alphabet with one fixed sound system.
Tolkien designed the script as part of his broader interest in constructed languages and writing systems. In The Lord of the Rings, readers encounter Tengwar in inscriptions, title pages, maps, and decorative designs. The Ring-inscription is one of its most famous examples, although it represents the Black Speech of Mordor through a particular mode.
Tengwar is sometimes confused with Cirth, another Tolkien-created script based on angular runic forms. Cirth is associated especially with Dwarves, while Tengwar is the more widely recognized flowing script seen in many editions and adaptations.