New Zealand consists of a large number of islands. The two main islands, which are much larger than the rest and where most of the population lives, are the North Island and the South Island. The latter is often referred to as the "mainland", especially by its residents, despite it being only a little larger and having a lower population. Stewart Island is by far the biggest of the smaller islands.

The following is a list of some of the islands of New Zealand:

• Arapawa Island
• Chatham Islands
  • Chatham Island
  • Pitt Island
• Codfish Island
• D'Urville Island
• Goat Island
• Great Barrier Island
• Hen and Chickens Islands
• Kapiti Island
• Kawau Island
• Little Barrier Island
• Mana Island
• Matakana Island
• Mayor Island
• Rabbit Island
• Rangitoto Island
• Resolution Island
• Ruapeke Island
• Ruapuke Island
• Secretary Island
• Soames Island
• Stephens Island
• Stewart Island
• Three Kings Islands
• Titi (Muttonbird) Islands
• Ulva Island
• Waiheke Island
• Ward Island
• Whale Island
• White Island

New Zealand also administers the following islands outside its immediate territorial waters. Most have no inhabitants, except for scientific or meteorological observers.

• Kermadec Islands in the north Tasman Sea.
  • Macauley Island
  • Raoul Island

The New Zealand Sub-Antarctic Islands are considered World Heritage Sites.

• Antipodes Islands
• Auckland Islands
• Bounty Islands
• Campbell Island and
• The Snares (Islands)

The following self-governing island territories are politically dependent areas of New Zealand but are not considered part of New Zealand geographically:

• Cook Islands
• Niue
• Tokelau

New Zealand also claims the Ross Dependency in Antarctica, including:

• Ross Island
• Balleny Islands
• Scott Island

See other islands of the world.