Business operations have been severely impacted by the increasing frequency and intensity of extreme weather conditions affecting economic development. Consequently, public pressure has been directed at businesses to build resilient and sustainable operations, especially in ASEAN countries, whose fragile natural environments make them among the most vulnerable to climate change. To better understand organisational responses, this study investigated the influence of internal resources and geographical regional effects on climate change business strategy. It provided empirical evidence from ASEAN countries based on the combined views of institutional and resource-based theories. Generally, ASEAN businesses were aware of climate change, and focused on strategies of fuel efficiency and greenhouse gas emissions reduction. Even though few businesses integrated climate change into their business strategy, there are several factors (board of directors with international experience, organisational slack, and country effect) that influence ASEAN climate change business strategy. Copyright © 2015 John Wiley & Sons, Ltd and ERP Environment