List of Prime Ministers of New Zealand by age

This is a list of Prime Ministers of New Zealand by age, including when they were born, what age they were when they were appointed Prime Minister, what age were they when they left the office and the age at which they died, or their current age as of 25 January 2017 if they are still alive. The table can be sorted by each different category.

The date of appointment as Prime Minister is the date on which they were sworn in by the Governor-General for their first term. The day on which they departed office is the final day of their final term. This is either the day a new Prime Minister was appointed or their date of death if they died whilst in office.

The three youngest people when they first became prime minister were:

The three oldest people when they first became prime minister were:

The three oldest people to last leave the office of prime minister were:

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