Cyanide Studio is a French video game developer founded in 2000 by seven former Ubisoft employees, with its headquarters in Nanterre, near Paris.

The studio is renowned for its diverse portfolio, including the Pro Cycling Manager series, Blood Bowl (an adaptation of the Games Workshop board game), Styx, Call of Cthulhu, and a Game of Thrones RPG.

In 2018, Cyanide was acquired by the French publisher Nacon.