As aviation emerges from a turbulent first half of the decade, regulation has become one of the industry's most powerful shaping forces. This session from the CAPA Airline Leader Summit - World (Dec-2025) brings together senior leaders from three major regional airline associations to examine how regulation is evolving and how industry bodies are responding. The discussion explores the unique role airline associations play as intermediaries between governments, multilateral institutions and commercial operators. With examples drawn from Asia-Pacific, Europe and Latin America, the session underscores that "one-size-fits-all" regulation rarely delivers optimal outcomes in aviation. This discussion provides timely insight into how regional airline associations are adapting their strategies, building cross-regional cooperation and engaging regulators to ensure that aviation regulation supports safety, sustainability and long-term industry viability rather than undermining it.