Third Hemisphere

Third Hemisphere is an integrated public relations, marketing, and communications agency based in Sydney, Australia, with additional offices in Melbourne and Singapore. Founded by Hannah Moreno, the agency was established with a clear vision to build authority and trust for organisations that are solving real problems, building new categories, and pushing industries forward. It positions itself as an 'Agency of Change', dedicated to partnering with impact-driven and innovation-economy organisations across the APAC region.

The agency provides a full spectrum of communication services, including media coverage, thought leadership, crisis management, digital marketing, content marketing, investor relations, award applications, social media strategy, email newsletters, and stakeholder communications. They employ a signature 'Waterfall Strategy' to integrate fragmented media and communications channels into a cohesive narrative, ensuring consistent key messages and high-impact assets that amplify each other. Their team includes former journalists, bringing an editorial instinct to crafting resonant stories rather than generic press releases.

Third Hemisphere is a Certified B Corporation, demonstrating a verified commitment to rigorous standards for social and environmental performance, accountability, and transparency. This certification reflects their founding principle of working with brands that are building a better future, including technology companies and sustainability ventures proving that commercial success and positive impact can coexist. The agency's leadership team is actively involved in client relationships, providing direct access to senior strategic counsel without intermediary account managers.

Key leadership includes Hannah Moreno as Founder & CEO, Jeremy Liddle as Managing Director, Liz Courtney as Executive Director of Growth & Impact, and recently appointed Directors Haikel Fahim (APAC expansion) and David Sharaz (political communications). Under Hannah Moreno's leadership, who has been recognised as B&T's Technology Woman of the Year and Mumbrella PR Professional of the Year, the agency has grown into one of Australia's most respected boutique agencies. Third Hemisphere has received industry accolades, including being named Mumbrella's Boutique Agency of the Year and a SABRE Award winner for Best Financial Services Campaign. The agency is also recognised by top1000.com as one of the world's top public relations agencies.

Third Hemisphere has a strong track record of securing thousands of media placements for a diverse client base, ranging from pre-revenue startups to ASX-listed enterprises. Notable client work includes successful campaigns for entities such as MONEYME, Gelion, DigitalX, SocietyOne, Oho, HB11 Energy, Arc Ento Tech, and Scalare Partners, across various high-value industries like technology, fintech, sustainability, and capital markets.