The FSA is advertising for three non-executive directors following the departure of Moira Black, Gillian Nott and Shamit Sagar.
The positions will become vacant on 30 November when the three non-executive directors complete their terms of office.
The Treasury said it was looking to fill these posts with people of undisputed integrity, standing and authority, with broad experience both inside and outside the financial services industry.
Members of the board were appointed in a personal capacity and do not serve as representatives of particular interests or associations, said the Treasury.