Leung Kwok-hung (; born 27 March 1956), also known as "Long Hair" (), is a Hong Kong politician and social activist. He was a member of the Legislative Council, representing the New Territories East. A Trotskyist in his youth, he was a founding member of the Revolutionary Marxist League. He became a political icon with his long hair and Che Guevara T-shirt in the protests before he was elected to the Legislative Council in 2004. In 2006, he co-founded a social democratic party, the League of Social Democrats (LSD) of which he was the chairman from 2012 to 2016.