Fourth Lee Hsien Loong Cabinet
The Fourth Cabinet of Lee Hsien Loong of the Government of Singapore was announced on 28 September 2015 following the general election on 11 September 2015, and came into effect on 1 October 2015. The day after the election, Prime Minister Lee Hsien Loong told the media that he would form the Cabinet within two weeks.
There are seven new office holders, five of whom are newly elected MPs:
- Ong Ye Kung – Minister.
- Ng Chee Meng – Minister.
- Chee Hong Tat – Minister of State.
- Koh Poh Koon – Minister of State from 1 January 2016.
- Janil Puthucheary – Minister of State from 1 January 2016.
- Baey Yam Keng – Parliamentary Secretary.
- Amrin Amin – Parliamentary Secretary.
Initial composition
Cabinet
Prior to the general election held on 11 September 2015, Transport Minister Lui Tuck Yew announced his retirement on 11 August. All other incumbent office holders successfully defended their parliamentary seats in the elections.The list of Cabinet ministers and other office-holders was announced on 28 September 2015. In a press conference, Prime Minister Lee Hsien Loong said, "I have given heavy responsibilities to the next generation of Ministers. They will be stretched and tested. They have to prove themselves and must gel together as a team. Soon after the end of this term, we must have a new team ready to take over from me."
Three veteran ministers were named Coordinating Ministers, each of them overseeing a handful of ministries.
- National Security – Teo Chee Hean.
- Economic and Social Policies – Tharman Shanmugaratnam.
- Infrastructure – Khaw Boon Wan.
- Vivian Balakrishnan – from Environment and Water Resources to Foreign Affairs.
- K. Shanmugam – from Foreign Affairs to Home Affairs, while retaining Law.
- Heng Swee Keat – from Education to Finance.
- Lawrence Wong – from Culture, Community and Youth to National Development.
- Masagos Zulkifli – from the Prime Minister's Office to Environment and Water Resources.
- Grace Fu – from the PMO to Culture, Community and Youth.
| Portfolio | Minister | Portrait | Date |
| Prime Minister | Lee Hsien Loong 李显龙 | 12 August 2004 | |
| Minister for Finance | Heng Swee Keat 王瑞杰 | 1 October 2015 | |
| Deputy Prime Minister | Heng Swee Keat 王瑞杰 | 1 May 2019 | |
| Co-ordinating Minister for National Security | Teo Chee Hean 张志贤 | 1 October 2015 | |
| Senior Minister | Teo Chee Hean 张志贤 | 1 May 2019 | |
| Co-ordinating Minister for Social Policies | Tharman Shanmugaratnam தர்மன் சண்முகரத்தினம் | 1 October 2015 | |
| Senior Minister | Tharman Shanmugaratnam தர்மன் சண்முகரத்தினம் | 1 May 2019 | |
Co-ordinating Minister for Infrastructure Minister for Transport | Khaw Boon Wan 许文远 | 1 October 2015 | |
| Minister in the Prime Minister's Office | Ng Chee Meng 黄志明 | 1 May 2018 | |
Minister for Communications and Information Minister-in-charge of Trade Relations | S. Iswaran எஸ். ஈஸ்வரன் | 1 May 2018 | |
| Minister for Culture, Community and Youth | Grace Fu Hai Yien 傅海燕 | 1 October 2015 | |
| Minister for Defence | Ng Eng Hen 黄永宏 | 1 October 2015 | |
| Minister for Education | Ong Ye Kung 王乙康 | 1 May 2018 | |
| Minister for the Environment and Water Resources Minister-in-Charge of Muslim Affairs | Masagos Zulkifli ماسڬوس ذوالكفل | 1 October 2015 1 May 2018 | |
| Minister for Foreign Affairs | Vivian Balakrishnan விவியன் பாலகிருஷ்ணன் | 1 October 2015 | |
| Minister for Manpower | Josephine Teo 杨莉明 | 1 May 2018 | |
| Second Minister for Home Affairs | Josephine Teo 杨莉明 | 11 September 2017 | |
| Minister for Health | Gan Kim Yong 颜金勇 | 1 October 2015 | |
| Minister for Home Affairs Minister for Law | K. Shanmugam காசிவிஸ்வநாதன் சண்முகம் | 1 October 2015 | |
| Minister for Social and Family Development | Desmond Lee 李智陞 | 11 September 2017 | |
| Second Minister for National Development | Desmond Lee 李智陞 | 1 May 2017 | |
| Minister in the Prime Minister's Office | Indranee Thurai Rajah இந்திராணி ராஜா | 1 May 2018 | |
| Second Minister for Education | Indranee Thurai Rajah இந்திராணி ராஜா | 1 May 2018 | |
| Second Minister for Finance | Indranee Thurai Rajah இந்திராணி ராஜா | 1 May 2018 | |
| Second Minister for Law | Indranee Thurai Rajah இந்திராணி ராஜா | 1 May 2018 – 30 June 2018 | |
| Minister for National Development | Lawrence Wong 黄循财 | 1 October 2015 | |
| Second Minister for Finance | Lawrence Wong 黄循财 | 22 August 2016 | |
| Minister for Trade and Industry | Chan Chun Sing 陈振声 | 1 May 2018 |
Sources: ; ;.
Ministers of State and Parliamentary Secretaries
, Mohamad Maliki Osman and Sim Ann were promoted from Ministers of State to Senior Ministers of State.Reshuffles
Between 1 October 2015 and 1 January 2016
Between 1 May and 11 September 2017
| Ministry | Ministers | Ministers of State | Parliamentary Secretaries |
| Prime Minister's Office |
|
| |
| Defence |
|
| |
| Foreign Affairs |
|
| |
| Home Affairs |
|
| |
| Trade and Industry |
|
|
|
| Finance |
|
| |
| Manpower |
|
| |
| Transport |
|
| |
| National Development |
|
| |
| Communications and Information |
|
| |
| Environment and Water Resources |
| ||
| Law |
| ||
| Health |
|
|
|
| Education |
|
|
|
| Social and Family Development |
| ||
| Culture, Community and Youth |
|
|