As many as 145 have joint secretaries have been made additional secretaries while 186 deputy secretaries have been promoted to joint secretaries.
Another 205 senior assistant secretaries have been made deputy secretaries.
The public administration ministry issued three separate orders about the promotions on Sunday.
In May this year, 85 public servants had been promoted to additional secretaries, 70 as joint secretaries and another 62 as deputy secretaries.
Last year, 873 officials were promoted to the posts of additional, joint and deputy secretaries.
After Sunday's promotions, there are 550 additional secretaries, 613 joint secretaries and 1,479 deputy secretaries.