A selection panel has voted for Narong Rathamarit to become a new member of the National Anti-Corruption Commission (NACC).
The 3-1 vote sees Mr Narong replace Klanarong Chanthik, who has completed his term.
The nomination was made by four committee members _ Supreme Court president Direk Ingkaninant, Supreme Administrative Court president Hassawuth Withitwiriyakul, House Speaker Somsak Kiatsuranont and opposition leader Abhisit Vejjajiva.
Ten people applied for the post, but three of the four committee members voted for Mr Narong. He was NACC secretary-general in 2012 and is currently an official attached to the NACC office.
The only member of the selection committee who did not back Mr Narong voted instead for former deputy finance permanent secretary Supa Piyajitti.
Mr Narong's selection must be endorsed by the Senate and then by the Palace.
Meanwhile, four of five new members of the Election Commission have been selected to replace the commissioners whose seven-year tenure expired on Sept 19. Under the constitution, three commissioners are chosen by a seven-member selection committee and the other two are picked by the Supreme Court.
The three new commissioners are Somchai Srisuthiyakorn, a political scientist at Sripatum University and former secretary-general of the People's Network for Election in Thailand; former ombudsman Prawit Rattanapian; and Boonsong Noysophon, a former senior judge at the Appeal Court Region 7. The Supreme Court has so far selected one of its judges to be an EC commissioner. The other commissioner will be picked on Friday.