The Hong Kong University Students' Union (HKUSU; 香港大學學生會) was a students' union founded in 1912 and registered under the Societies Ordinance in Hong Kong.^[1] It was the officially recognized undergraduate students' association^[2] of the University of Hong Kong until 13 July 2021 after the union's council passed a motion in memorial to a deceased assailant who attacked and severely stabbed a police officer on the street.^[3]

The Union was established on 16 October 1912,^[4] when it was first named as the Hong Kong University Union,^[5] one month after the commencement of the first academic session and some two years after the foundation of the University of Hong Kong.

After the Second World War in 1945,^[5] the Hong Kong University Students' Society^[5] was formed on 13 November 1946 to "pave the way for the eventual resuscitation of the Union".^[6] The Union was then revived in 1947.^[6] Two years later in 1949,^[5] the Union submitted a successful application for becoming a student organisation to the Hong Kong Police,^[5] independent from the operation of the University.

The Union serves both undergraduate and postgraduate students and is the only official student organisation serving the undergraduates of the University of Hong Kong. Undergraduates become a Union member automatically. Other students of the University can become a member upon the payment of membership fee.

According to the Constitution, the aims of the Union are:^[5]

• To promote the welfare of the student body
• To act as a bridge between the student body and the University authority in furthering the interests of the students and the University as a whole
• To identify the student body with social issues in the interests of the people of Hong Kong
• To represent the student body both tensely and internationally

The highest authority of the Union is the General Meeting (GM) and General Polling (GP). The quorum for both the General Meeting or General Polling is currently 10% of the full members. The General Meeting is hardly ever called, mostly because it is difficult to find a venue to accommodate many members at the same time. However, General Pollings are held almost every year.

There are currently 122 student societies affiliated to HKUSU. These students' societies and clubs can be categorised into six main groups: Campus media, Faculty and academic societies, Hall students' association, Sports clubs (forming the Sports Association, HKUSU), Cultural clubs (forming the Cultural Association, HKUSU) and Independent clubs (forming the Independent Clubs Association, HKUSU).

HKUSU student activities and service outlets include:

The Union acts as a channel between students and the University. Some of the current projects include:

HKUSU, as one of the students' unions of the 11 universities in Hong Kong, has been very active in current affairs and student movements.

In 1998, the General Polling of the Union adopted that the Pillar of Shame (國殤之柱) should stay in the University campus permanently. This marked the beginning of a permanent stance that the Chinese Communist Party should be held responsible for the June Fourth massacre in Tiananmen Square in Beijing in 1989. Later in 2009, another General Polling passed stated that the Central People's Government of China should rehabilitate the June Fourth Massacre, and be held responsible for the deaths and casualties during the incident.

In November 2016, students' unions across all major Hong Kong universities, including HKUSU, invited Christopher Patten, former Hong Kong governor, to be the guest of honour in a lecture that held at Loke Yew Hall in the University of Hong Kong.^[16]

Further information: BAHCEP (Beijing And Hong Kong Cultural Exchange Program)

As part of the construction of the Centennial Campus, the Hsü Long Sing Amenities Centre, where the HKUSU had resided for a number of years, was demolished in 2011. Development of a new Students' Union Building was completed in September 2011. Since the Faculty of Arts, Faculty of Law, and Faculty of Social Sciences has been relocated in the west of the HKU, the new Students' Union Building has become the heart of HKU, where majority of student activities will take place.

The Hong Kong University Students' Union Choir was founded in 1967 and has won a number of student awards since its foundation.^{[17][18][19][20]}

• Billy Fung, 2015 President
• Steven Kwok, 2008 President, later Labour Party chairman
• Raymond Mak, 2003 President
• Gloria Chang, 2000 President
• Andrew Fung, 1984 President, later Information Coordinator of Chief Executive Office
• Mak Hoi-wah, 1975 President, later Hong Kong Alliance vice-chairman
• Yeoh Eng-kiong, 1969 President, later Health Secretary
• Lo Hin-shing, 1915 Chairman, later served as magistrate

In the early days of the Union, the student leaders were elected to the chairmanship of the Union Council, while the Chancellor of the university, also the Governor of Hong Kong, was the ex-officio President of the Union. Vice Presidents were "well-known gentlemen" in the city, such as donors of the Union.^[21] In 1926, the Union adopted amendments to the constitution which made the Chancellor as ex-officio Patron of the Union, while the union leader became known as President instead of Chairman, in line with English universities' practices.^[22]