There are 18 High Court locations throughout New Zealand, and one stand-alone registry.

The High Court Judges and Associate Judges are based in Auckland, Wellington and Christchurch, but also travel on circuit to Whangarei, Hamilton, Rotorua, Tauranga, Gisborne, New Plymouth, Napier, Whanganui, Palmerston North, Nelson, Blenheim, Greymouth, Timaru, Dunedin, and Invercargill.

The Court has exclusive jurisdiction over all civil claims where the amount in dispute exceeds $350,000, and certain categories of proceedings.

The categories of proceeding which can only be commenced in the High Court includes matters concerning admiralty, certain applications relating to land (such as seeking its transfer or caveats), company law including liquidations, bankruptcy, the administration of estates and trusts, and trade mark and patent infringement.

The following are the Judges of the High Court as of February 2024[update]:[6] The Trans-Tasman Proceedings Act 2010 (NZ), the Trans-Tasman Proceedings Act 2010 (Aust) and the High Court Rules 2016 streamline the process for resolving civil proceedings with a trans-Tasman element.