Ciaran Eugene Gultnieks (born 1970) is a British computer game programmer, whose projects include Star Wars (1988, for home computers), Dogfight (1993), Slipstream 5000 (1995) and Hardwar (1998) for the PC. He is the founder of F-Droid and contributes to the microblogging platform GNU social.
Gultnieks was the first employee at Vektor Grafix, later moving on to work for Microprose and Spectrum Holobyte. In 1993, he co-founded development house The Software Refinery, which closed in 2002. In recent years he has contributed to various open source software projects. In 2010, he founded the F-Droid software repository, a catalogue of FOSS applications for the Android platform.
He is credited on the following games: