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- Cagliostro: a small European kingdom in the animated movie The Castle of Cagliostro.
- Carpania: European kingdom in The Great Race movie.
- Carpathia: Balkan kingdom from the play The Sleeping Prince by Terence Rattigan and the subsequent movie The Prince and the Showgirl and musical The Girl Who Came to Supper
- Chernarus: post-soviet country in the video game ArmA 2.
- Chiroubistan: a Balkan/Islamic country perpetually at war, in the French comic strip "Henriette".
- Chocovakia: European republic setting for the #0-issue of the Flemish Spike and Suzy-series, borders Belgium, named based on Czechoslovakia.
- Concordia: a small country only a few miles across somewhere in Europe in the movie Romanoff and Juliet.
- Cordina: locale in Nora Roberts' romance novels.
- Corinthia, of which the capital was Bleiberg: setting of Harold MacGrath's, The Puppet Crown (1901, in which year the book was the #7 US fiction best seller).
- Costa Lottsa: Tiny nation located between Italy and France, mentioned in San Sombrèro: A Land of Carnivals, Cocktails and Coups
Read more about this topic: List Of Fictional European Countries