Þursaflokkurinn (English: the hobgoblins), often written in a simplified way ("Thursaflokkurinn"), is an Icelandic progressive rock group that was mainly active in the late 1970s and early 1980s. Similar to the Dutch band Focus, Þursaflokkurinn combined rock music with influences of classical music and jazz, enhancing their sound by adding elements of Scandinavian folk music and sometimes eccentric vocals resembling the Rock in Opposition work of, for instance, the Swedish band Samla Mammas Manna.