ABSTRACT This study investigates factors affecting innovation culture in ASEAN economies and proposes a model for building innovation culture in traditional organisations. Using multiple-case analysis, the research examines four large Thai businesses across conglomerate, retail, communication, and support service sectors. We employ qualitative methods, including interviews with innovation centre directors, mid-level management, and staff, to gather insights. The study identifies key strategies for fostering innovation culture in traditional Asian organisations by analysing commonalities. The resulting model emphasises leadership, strategy, and resource allocation as crucial elements for building and maintaining an innovative culture. This research contributes to both theoretical understanding of innovation culture in traditional Asian business organisations and practical application in organisation development. The findings provide valuable insights how to overcome cultural obstacles and foster innovation in traditional ASEAN economies to improve their global competitiveness by creating a corporate culture favourable for innovation.