Siglo XX was a Belgian Coldwave, Darkwave and Gothic rock group from Genk active from 1979-1991. The group's sound was influenced by music of Joy Division and Factory Records. Siglo XX was one of the more well-known Belgian coldwave bands and by 2010 was considered to have been a key influence on the Belgian music scene. The group's name in Spanish means "twentieth century". It can both be pronounced as Siglo Iks Iks or as Siglo Veinte and reportedly stems from an anarchist movement during the Spanish Civil War and/or a Bolivian mine named Siglo XX that was the scene of social unrest.
Siglo XX war eine belgische Dark-Wave-Band aus Genk, die zwischen 1979 und 1989 existierte.