Dame Patsy Reddy will be sworn in as Governor-General on September 28, Prime Minister John Key has announced.
She became a Dame in 2014 and Mr Key says the Queen has now approved her appointment as an an Additional Dame Grand Companion of the New Zealand Order of Merit and as an Additional Companion of the Queen's Service Order.
"These appointments are an important step in the process of Dame Patsy becoming the next Governor-General," he said.
"When she takes office Dame Patsy will also become Chancellor of the New Zealand Order of Merit, and Principal Companion of the Queen's Service Order."
Dame Patsy will succeed Sir Jerry Mateparae, whose term is ending.