The Fourth Legislative Council of Hong Kong (Chinese: 香港第四屆立法會; pinyin: Xiānggǎng dì sì jiè lìfǎ huì) was the fourth meeting of the legislative branch of the Hong Kong Special Administrative Region Government. The membership of the LegCo is based on the 2008 election. The term of the session is from 1 October 2008 to 30 September 2012, during the second half of the Donald Tsang's administration and first two months of the Leung Chun-ying's term in office. The meeting place was moved from the Legislative Council Building to the new built Legislative Council Complex in 2011. The Democratic Alliance for the Betterment and Progress of Hong Kong remained the largest party with 10 seats. Notable newcomers to the Legislative Council included Regina Ip, Priscilla Leung, Wong Yuk-man, Tanya Chan, and Paul Tse.

• 8 October 2008: The DAB member Jasper Tsang Yok-sing who was suggested^{[by whom?]} also an underground member of the Chinese Communist Party was elected President of the Legislative Council, became the first partisan President.^{[1][better source needed]}
• 15 October 2008: Annual policy address of the Chief Executive Donald Tsang. During the address, the League of Social Democrats legislator Wong Yuk-man hurled a banana in the direction of Donald Tsang.^[2] The three LSD members were ejected from the chamber for the act.
• 18 December 2009 – 16 January 2010: Pro-democracy legislators filibustered against the financing for the constructions of the Guangzhou–Shenzhen–Hong Kong Express Rail Link by raising many questions on very specific issues, delaying the passing of the bill from 18 December 2009 to 16 January 2010.^[3] On the evenings the meetings were held, the Legislative Council Building was surrounded by thousands of anti-high-speed rail protesters.
• 26 January 2010 – 16 May 2010: The legislators from the Civic Party (Alan Leong and Tanya Chan) and League of Social Democrats (Wong Yuk-man, Albert Chan and Leung Kwok-hung) resigned and launched a direct by-election for all five constituencies in which they called a de facto referendum on 16 May 2010.
• 23—25 June 2010: The revised 2012 electoral reform package was passed with absolute majority supported by the Democratic Party in the LegCo after hours of hot debates. The resolution for the chief executive in 2012 from 800 to 1,200 members, won endorsement at 2.20 pm on 24 June by the legislature by 46 votes to 13. Pan-democrats who supported the proposals included eight from the Democratic Party, Joseph Lee Kok-long and Frederick Fung of the ADPL.^[4] James To, who had earlier expressed misgivings about giving his support, voted in favour.^[4][5] The 'Amendment to method for forming the Hong Kong Legislative Council' was approved by LegCo at 13:30 on 25 June, with 46 votes in favour and 12 against. 'Longhair' Leung Kwok-hung was ejected from the chamber just prior to the vote.^[6] Thousands of protestors from both for and against the proposal gathered outside of the LegCo building.
• 2—17 May 2012: Albert Chan and Wong Yuk-man of People Power submitted 1306 amendments altogether to the Legislative Council (Amendment) Bill 2012, by which the government attempted to forbid resigning lawmakers from participating in by-elections. Leung Kwok-hung of the League of Social Democrats and Andrew Cheng also participated in the filibustering. Miriam Lau of the Liberal Party carried out a 30-hour hunger strike to voice her opposition against such act of obstructionism and waste of public coffers. The legislative council carried on multiple overnight debates on the amendments with the support of the pro-Establishment camp. On morning of 17 May 2012, Jasper Tsang, President of the Legco adopt Article 92 of the Standing Order, which allows the president follow foreign parliament rules for unregulated behaviours to terminate the debate. In the end, all amendments were defeated and the Bill was passed.

Note: Italic represents organisations that still function but become under another affiliation.

The following table is a list of LegCo members elected on 7 September 2008 in the order of precedence.

Members who did not serve throughout the term are italicised. New members elected since the general election are noted at the bottom of the page.

Key to changes since legislative election:

^a = change in party allegiance

^b = by-election

^c = other change

• 16 May 2010, Albert Chan, Leung Kwok-hung, and Wong Yuk-man from the League of Social Democrats and Alan Leong and Tanya Chan from the Civic Party re-elected to the LegCo after their resignation to call for a de facto referendum on universal suffrage.

• Finance Committee— Chair: Emily Lau
  • Establishment Subcommittee— Chair: Wong Yung-kan (2008—10), Margaret Ng (2010—12)
  • Public Works Subcommittee— Chair: Raymond Ho
• Public Accounts Committee— Chair: Philip Wong
• Committee on Members' Interests— Chair: Sophie Leung
• House Committee— Chair: Miriam Lau
  • Parliamentary Liaison Subcommittee— Chair: Abraham Razack
• Committee on Rules of Procedure— Chair: Tam Yiu-chung

• 2008 Hong Kong legislative election
• 2010 Hong Kong by-election