Iain Thain

Iain Thain is widely recognised as one of New Zealand’s premier litigators, with a formidable track record in high-stakes commercial advocacy across all levels of the New Zealand courts, specialist tribunals, and international arbitration. With over three decades of experience, Iain is the trusted advisor to leading corporates, financial institutions, and public sector entities navigating complex disputes and regulatory challenges.

He has been involved in numerous landmark cases, including a precedent-setting Supreme Court decision on local alcohol policies that prompted legislative reform, as well as the leading case on credit fees in banking and second-tier lending.

Clients credit Iain's ability to explain incredibly complex issues in a way that is clear and easy to digest as a key reason why he is a trusted advisor to their businesses. He is highly valued as not only one of the best litigators in New Zealand, but as someone who is easy to deal with and highly intelligent. 

Iain’s litigation practice spans the full spectrum of commercial law, including competition and regulatory enforcement, securities law, consumer protection, construction, and cross-border disputes. He is known for his strategic clarity, courtroom presence, and ability to resolve disputes efficiently — whether through litigation, arbitration, or alternative dispute resolution.

Iain routinely collaborates with the firm's transactional teams to structure deals that are litigation-resilient from the outset. He is trusted by regulators and corporates alike for his insight into compliance, risk mitigation and dispute resolution. 

Iain also plays a key role in DLA Piper’s pro bono leadership.