After 27 years at the Government of Singapore Investment Corporation, Mr Ng Kok Song, 64, will be retiring as the chief investment officer from 1 Feb.
GIC said that it is appointing Mr Lim Chow Kiat, 42, currently its deputy chief investment officer, to succeed Mr Ng.
Prime Minister Lee Hsien Loong thanked Mr Ng for his years of service, noting that Mr Ng had received the Meritorious Service last year.
Mr Lee said that Mr Ng had provided strong leadership to GIC, which manages Singapore's foreign reserves, in times of crisis and groomed a generation of investment officers.
"You will not only be remembered for your distinguished service in reserve management but also for your charisma, affability and pursuit of a life filled with meaning and value," said Mr Lee.
Mr Ng started out in investment management in 1970 when he joined the Finance Ministry as an investment analyst. He moved to the Monetary Authority of Singapore when it was formed in 1971 and took over the role role of manging Singapore's reserves.
He joined GIC five years after it was formed in 1986 and headed the equities and bond department. In 2007, he was made GIC's group chief investment officer.