Asia’s Hub for
Climate Action &
Sustainable Business
Solutions
Asia’s Hub for Climate Action & Sustainable Business Solutions
10-11 September 2026 Hong Kong
Rethink /riːˈθɪŋk/ verb
To think again about a plan, idea, or system in order to change or improve it.
it’s time to rethink how and why we do business in Asia
ReThink HK is one of the region’s most important business events for climate action and sustainable development.
The 6th edition hosted over 9,500 attendees in September 2025, and was designed specifically for business leaders, sustainability practitioners, and those responsible for researching and resourcing net-zero and ESG strategies.
The two-day conference and expo demonstrated the business case for a just and sustainable transition supported by real solutions that facilitate climate action and support business transformation.
Asia will lead the transition towards a more resilient, inclusive, and sustainable future. ReThink HK is here to accelerate and celebrate this progress.
All delegate fees contribute towards funding amazing impact projects supported by The ReThink Foundation in Hong Kong.
ReThink HK 2025 was a partner event of
2025 Event Sponsors
2025 Event Partners
Our Purpose
The challenges of reducing GHG emissions and securing global net-zero emissions in order to protect, and then restore, the balance of global ecosystems become more and more critical each and every day.
It is only through cross-sector, private and public collaboration that the scale of change needed can be achieved – ReThink HK exists to accelerate that change in Hong Kong, and beyond.
We want to hand future generations a realistic chance of thriving in equitable communities that are in harmony with nature, use resources efficiently, and contribute towards a low-carbon and circular economy.
By changing the way we consume, invest, and operate our businesses, we can reduce our impact on the environment and improve the lives of all through collective change and shared responsibility – we have to act now and accelerate the rate of change.
“The hard truth is that we have failed to ensure we remain below 1.5 degrees.
Science now tells us that a temporary overshoot beyond the 1.5 limit – starting at the latest in the early 2030s – is inevitable.
We need a paradigm shift to limit this overshoot’s magnitude and duration and quickly drive it down..“
Mr. António Guterres, UN Secretary-General at the Opening Speech of COP30
The Conference
The past five editions have each expanded on our founder’s ambition to curate a high-value business ecosystem event that is outcome focused, delivers immediate and measurable impact, facilitates collaboration, and leads to real action towards a more equitable and climate-smart future for Hong Kong.
Following a hugely successful 6th edition, in September 2025, the ReThink HK conference is further expanding and continues to be curated in partnership with leading business associations, industry bodies, NGOs and campaign groups.
ReThink HK 2.0 will launch in 2026 as Asia’s Hub for Climate Action & Sustainable Business Solutions.
As a content-led conference-expo hybrid, ReThink HK puts thought leadership, insight, and debate alongside innovation and real solutions.
“Many individuals are doing what they can. But real success can only come if there is a change in our societies and in our economics and in our politics.”
Sir David Attenborough, May 2019