Radomir (Bulgarian: Радомир) is a town in the Pernik region of Bulgaria with a population of about 16,503. It is located at .
In 1918, Bulgaria was ruled by Ferdinand of Bulgaria, under whom Aleksandar Stamboliyski had been imprisoned for opposing Bulgaria's participation in the Balkan War and its alliance with the Central Powers in World War I. When in September the Allied forces broke into Bulgaria, Ferdinand agreed to release Stamboliyski in return for a promise to help restore order in the military. However, Stamboliyski instead aligned himself with the uprising and in Radomir proclaimed Bulgaria to be a republic. His supporters then attempted an attack on Sofia. The Radomir Rebellion was stopped when this force was defeated by Macedonian and German tsarists, who also did not retain control for long as Bulgaria had signed an armistice with the Allies by the end of the month.
Radomir (1000 - ?) was also the name of a Macedonian-born Bulgarian prince.
Radomir was the surname of Gavril Radomir of Bulgaria (Bulgarian: Гаврил Радомир), who ruled Bulgaria from October 1014 to August 1015.
Website of the city of Radomir (in Bulgarian)