What language is inscribed on the One Ring in J.R.R. Tolkien’s The Lord of the Rings?

The One Ring bears an inscription in the Black Speech of Mordor.

The inscription is written in Tengwar script, but its language is the Black Speech created for Sauron and used by the forces of Mordor. Its famous words begin, “Ash nazg durbatulûk,” translated as “One Ring to rule them all.” This distinction between language and writing system is important: Tengwar is the script, while the Black Speech is the language being represented.

The verse is part of a longer rhyme spoken in The Lord of the Rings. The inscription becomes visible when the Ring is heated, revealing fiery letters that connect it directly to Sauron’s power. Readers sometimes answer “Tengwar,” but that identifies the script rather than the language.

Tolkien designed the Black Speech as a harsh artificial language for Mordor. The Ring’s wording also echoes the larger history of the Rings of Power, including their creation, distribution, and Sauron’s attempt to control them through the One Ring.