J.R.R. Tolkien designed the Tengwar script for writing several of his Elvish languages.
Tengwar is an artificial writing system whose name means “letters” in Quenya. Tolkien created it primarily for the fictional history of Middle-earth, attributing its invention within the legendarium to the Elf Fëanor. Its letter shapes and sound-based modes allowed it to represent languages including Quenya and Sindarin.
The script is not itself a language. This distinction matters because readers sometimes call Tengwar an Elvish language, while it is actually a writing system used to record languages. Tolkien also devised different modes, so the same sign could have different phonetic values depending on the language being written.
Cirth is a separate runic script used especially by Dwarves and later adapted by other peoples. Sarati is another Tolkien script, associated with an earlier stage of his invented writing systems. These related creations show how deeply Tolkien connected language, history, and script design.