Cyan, Inc., doing business as Cyan Worlds, is an American video game developer and publisher based in Mead, Washington. Founded by brothers Rand and Robyn Miller in 1987, the company created the Myst series.

Myst became the best-selling PC game ever made when it was released in 1993, and remained so for several years afterwards. It spawned several sequels, including Riven and the massively multiplayer online adventure Myst Online: Uru Live. Before Myst, the company created children's games such as The Manhole. In 2016, it released the Kickstarter-funded game Obduction and in 2023, it released Firmament, also funded with Kickstarter.