Sigil (comics), a comic book series published by CrossGen
Sigil (Dungeons & Dragons), a city in the Planescape campaign for the Dungeons & Dragons role-playing game
Sigil (mod), a 2019 Doom mod developed by Romero Games
Sigil, a 2003 album by Cauda Pavonis
Sigil, a 2006 album by Nuru Kane
Computing
Sigil (application), a free, open-source editing software for e-books in the EPUB format
Sigil (computer programming), a symbol affixed to a variable name, showing the variable's datatype or scope
Organizations
Sigil Games Online, a video game developer based in Carlsbad, California
Sigil Collective, an art and architecture collective based in Beirut and New York City, founded by Salim Al-Kadi, Khaled Malas, Alfred Tarazi, and Jana Traboulsi
Seals
Seal (emblem), a device for making an impression on a material and the impression made by it
Sigillion, a type of legal document publicly affirmed with a seal
Other uses
Sigillum, a taxonomic synonym of Polygonatum, a genus of flowering plants
See also
Black Sigil: Blade of the Exiled, a 2009 role-playing video game for the Nintendo DS developed by Studio Archcraft
The Book of Sigils, a 1995 supplement published by R. Talsorian Games for the role-playing game Castle Falkenstein
Holiday v Sigil, an 1826 Court of Chancery case
Scribal abbreviation, or siglum, an abbreviation used by ancient and medieval scribes writing in various languages