This article lists references to the Touhou Project outside the Touhou universe. For the purpose of this page, something is only classified as a reference if the work in question otherwise has no relation to Touhou (i.e. it is not primarily about Touhou or its characters). References to both canon material and fandom memes (such as yukkuris) are included, whether official (i.e. sponsored by ZUN) or unofficial, and may appear in any medium - videogames, manga, anime, music, etc.