Cindy Jefferies is a UK children's writer with sixteen books in print. She is best known for her series Fame School about a group of children who are singing, playing and dancing their way to success in the music industry. This very English approach to the subject found a wide and enthusiastic audience, and has so far (2010) been translated into 15 languages. She also contributes to titles published for charity, including Lines in the Sand – a response to the allied invasion of Iraq, with all funds raised donated to UNICEF in Iraq.

Cintio Vitier was a Cuban poet, essayist, and novelist. Upon selecting him for the Juan Rulfo Prize, the award jury called him "one of the most important writers of his generation".

Cinzia Tani is an Italian writer, television presenter and radio host. Tani received the Order of Merit of the Italian Republic from the Italian president in 2004.

Cirilo Villaverde de la Paz was a Cuban poet, novelist, journalist and freedom fighter. He is best known for Cecilia Valdés, a novel about classes and races in colonial Cuba.

Ciro Alegría Bazán was a Peruvian journalist, politician, and novelist.

Claas Hugo Humbert was a German scientist and writer.

Claas-Hendrik Relotius is a German former journalist. He resigned from Der Spiegel in 2018 after admitting to numerous instances of journalistic fraud.

Clair Huffaker was an American screenwriter and author of westerns and other fiction, many of which were turned into films.

Claire Cameron is a Canadian novelist and journalist.

Claire Castillon, born May 25, 1975, in Boulogne-Billancourt (France), is a French writer. She writes novels, short stories and children's books.