The Fife Socialist League (FSL) was a minor left-wing political party which existed in Fife, Scotland from 1957 until 1964. It was associated politically with the British New Left and the journal New Reasoner, an antecedent of the present-day New Left Review. From 1960-1962, it published a monthly journal called The Socialist. Willie Thompson, editor of Scottish Marxist, would later describe the FSL as the only significant example of industrial working-class participation in the British New Left.