Alan Bollard is to head the Asia Pacific Economic Co-operation (Apec) secretariat for the next three years.
He has been Governor of the Reserve Bank for the past 10 years, following stints as Secretary to the Treasury and chairman of the Commerce Commission.
Apec's 21 member economies account for more than half the world's economic output and nearly half of its trade.
Robert Scollay, director of Auckland University's Apec Study Centre, said there had been a long-running question within Apec as to how much responsibility the member economies were prepared to give the secretariat.
"To the extent the secretariat is entrusted with greater responsibilities he will be an excellent person to carry that forward," Scollay said.