The Celtiberian script is a Paleohispanic script that was the main writing system of the Celtiberian language, an extinct Continental Celtic language, which was also occasionally written using the Latin alphabet. This script is a direct adaptation of the northeastern Iberian script, the most frequently used of the Iberian scripts.

The Paleohispanic scripts are the writing systems created in the Iberian Peninsula before the Latin alphabet became the main script. Most of them are unusual in that they are semi-syllabic rather than purely alphabetic, despite having supposedly developed, in part, from the Phoenician alphabet.