Foreign Minister Murray McCully will be at a top level summit on Afghanistan next week.
Mr McCully will attend the conference in London, which he says will focus on governance, economic development and security objectives.
He will join foreign ministers from nations contributing to the International Security Assistance Force in Afghanistan.
British Prime Minister Gordon Brown, the United Nations Secretary-General Ban Ki-Moon and Afghanistan's President Hamid Karzai will open the meeting.
It will be co-chaired by British Foreign Secretary David Miliband and Afghan Foreign Minister Rangin Spanta.