Prime Minister John Key said he was "thrilled" about the visit.
"This is Prince Harry's first visit to New Zealand and we are very keen to show him as much of the country as possible."
Prince Harry will be coming to New Zealand after a four-week secondment with the Australian Defence Force.
His brother Prince William toured New Zealand last year with the Duchess of Cambridge and son George.
Prince Charles and the Duchess of Cornwall toured in 2012.
Further details about dates and regions to be visited would be released closer to his arrival.