The Klingon scripts are fictional alphabetic scripts used in the Star Trek movies and television shows to write the Klingon language.

In Marc Okrand's The Klingon Dictionary, the Klingon script is called pIqaD, but no information is given about it. When Klingon letters are used in Star Trek productions, they are merely decorative graphic elements, designed to simulate real writing and to create an appropriate atmosphere.

The Astra Image Corporation designed the letters currently used to "write" Klingon for Star Trek: The Motion Picture, although they are often incorrectly attributed to Michael Okuda. They based the letters on the Klingon battlecruiser hull markings (three letters) first created by Matt Jeffries and on Tibetan writing because the script had sharp letter forms—used as an allusion to the Klingons' love for bladed weapons.