Varban Kilifarski (), under the pseudonym Gosho (), was a Bulgarian revolutionary, anarchist and member of the Internal Macedonian Revolutionary Organization.
He was born in Harsovo, Bulgaria in 1879. He studied at the gymnasium in Razgrad. His brother, Aleksandar Kilifarski, was a teacher in Patele. In 1893 he started his revolutionary activities as a member of a Macedonian Secret Revolutionary Committee. Later Kilifarski became a member of the Internal Macedonian Revolutionary Organization and a friend with Gotse Delchev. During this period, he began to organize kidnappings for ransom. His chetnik was Trayko Gyotov.
Kilifarski left the IMRO, settled in Sofia, and in 1907, together with Mihail Gerdzhikov, founded Svobodno Opshtestvo, the first periodic anarchistic newspaper in Bulgaria, and later, Bezvlastie.
In 1912 he moved to France and joined Sébastien Faure's first labor-anarchist school, "La Rouche". Influenced by the experiments of Francisco Ferrer's Modern School, Kilifarski returned to Bulgaria and began establishing his own school, but the project was abandoned when the First Balkan War broke out in 1912. With the outbreak of the First World War in 1914, Kilifarski moved to Italy, spending part of the time under house arrest, before returning to Bulgaria after the war ended.
Kilifarski settled in his father's farmstead near Ashiklar, where he died on 20 January 1923 after a brief illness.