Mr Teo Chee Hean was appointed Chairman of Temasek Holdings on 9 October 2025, after joining the Board as Deputy Chairman in July 2025. He also serves as Senior Advisor in the Prime Minister’s Office (PMO) of the Republic of Singapore.

Mr Teo was appointed Singapore’s Senior Minister from 2019 to 2025 and served as Deputy Prime Minister from 2009 to 2019. He also concurrently served as Coordinating Minister for National Security from 2011. In these roles, he oversaw the National Security Coordination Secretariat, the Smart Nation and Digital Government Group, the National Population and Talent Division and the National Climate Change Secretariat under the Prime Minister's Office.

Mr Teo's career spans political office and the defence sector. He had served as Minister for Home Affairs, Minister for Defence, Minister for Education, and Minister for the Environment, as well as Minister of State in the Ministries of Finance, Communications and Defence. He entered politics in 1992 as a Member of Parliament in Marine Parade Group Representation Constituency (GRC) and was subsequently re-elected six times in Pasir Ris-Punggol GRC. Before being elected to political office, he served in the Singapore Armed Forces (SAF) where he held various command and staff appointments in the Republic of Singapore Navy and the Joint Staff, rising to the rank of Rear Admiral as Chief of Navy in 1991.

Mr Teo had previously served on the GIC Board where he also chaired the GIC International Advisory Board. He has also served on the boards of IRAS, PSA, Nanyang Technological University and Ngee Ann Polytechnic.

Mr Teo holds a Bachelor of Science (First Class Honours) in Electrical Engineering and Management Science from the University of Manchester, a Master of Science degree (with distinction) in Computing Science from Imperial College London, and a Master’s in Public Administration from the Kennedy School of Government at Harvard University, where he was named a Littauer Fellow.