C14, C.XIV or C-14 may be:
Right Sector (Ukrainian: Правий сектор, Pravyi Sektor) is a far-right Ukrainian nationalist political party that originated in November 2013 as a paramilitary confederation at the Euromaidan protests in Kiev, where its street fighters fought against riot police. The coalition became a political party on 22 March 2014, at which time it claimed to have perhaps 10,000 members.
Founding groups included Trident (Tryzub), led by Dmytro Yarosh and Andriy Tarasenko; and the Ukrainian National Assembly–Ukrainian National Self-Defense (UNA–UNSO), a political/paramilitary organization. Other founding groups included the Social-National Assembly and its Patriot of Ukraine paramilitary wing, White Hammer, and Carpathian Sich. White Hammer was expelled in March 2014, and in the following months Patriot left the organization along with many UNA-UNSO members.
In June 2014 one of the groups was assigned by the Interior Ministry to surveil Mariupol after it captured the city from Russian-backed insurgents.