香港專上學生聯會
The Hong Kong Secondary Students Union (Chinese characters: 香港中學生聯盟) is a pro-democracy student organisation in Hong Kong established in August 2003 by some pro-democratic secondary school students of Hong Kong. Formed by various students' associations (SA's) and students' councils (SC's) of secondary schools, it is the third largest politically involved youth organisation in Hong Kong, after the Hong Kong Federation of Students and the Hong Kong Youth and Tertiary Students Association.