Virabongsa is a respected economist and a former finance minister.
The government also appointed Tongthong Chandransu as the permanent secretary for the PM’s Office.
Tongthong, presently secretary general of the National Education Council, will replace Chaturong Panyadilok, who is to become a senior adviser in the PM's Secretariat.
The appointments will take effect pending the issuing of royal commands for the respective positions.