You can change your own name in New Zealand if you're over 18 and a citizen or permanent resident.
Usually, both parents need to agree to change a child's name, even if they're not together. Once your child is 16, you can't change your child's name without their consent.
If you legally change your name, you don't have to replace your driver licence — but you can if you want to. You'll need to provide an original document that shows the change.
If you want to change the name in your passport, you'll need to apply for a new one. The name in your passport must be your officially registered name.
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