Tetragrammaton Labyrinth
 Tetragrammaton Labyrinth (断罪者〜Tetragrammaton Labyrinth〜 Danzaisha Tetragrammaton Labyrinth) is a Japanese manga series written and illustrated by manga author Ei Itou. The manga was serialized in the Japanese seinen manga magazine Comic Gum between January 26 2005 and November 26 2007 published by Wani Books. The manga has been licensed by Los Angeles-based company Seven Seas Entertainment for distribution in the English language.