Asia’s Hub for
Climate Action &
Sustainable Business
Solutions
Asia’s Hub for Climate Action & Sustainable Business Solutions
10-11 September 2026, Hong Kong
The conference framework and plans for ReThink HK 2026 will be announced soon. Sign up here to be the first to know
it’s time
to rethink
how and why we do business in Asia
Rethink /riːˈθɪŋk/ verb
To think again about a plan, idea, or system in order to change or improve it.
ReThink HK is one of the region’s best-attended and most ambitious 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 will accelerate Hong Kong towards a more resilient and sustainable future.
All delegate fees contributed 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 which are part of a city that is in harmony with nature, uses resources efficiently and contributes 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. We can help demonstrate what Hong Kong is really capable of, but the opportunity is precious and must not be wasted.
“We are in the fight of our lives. And we are losing. Greenhouse gas emissions keep growing. Global temperatures keep rising. And our planet is fast approaching tipping points that will make climate chaos irreversible.
We are on a highway to climate hell with our foot still on the accelerator.”
Mr. António Guterres, UN Secretary-General at the Opening Speech of COP27
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 & Sustinable 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