Westpac Banking Corporation has topped a global list of sustainable companies released during the World Economic Forum in Davos.
Other Australian companies in the Global 100 list include Australia and New Zealand Banking Group Ltd, at 19, the Commonwealth Bank of Australia at 25, Stockland Real Estate at 32 and Wesfarmers Ltd at 92.
Companies considered for the list are scored on energy, water, carbon and waste productivity, as well as safety performance and innovation capacity.
Criteria also include the percentage of tax paid, the ratio of average worker to chief executive officer pay, employee turnover, pension fund status and leadership diversity.
Westpac chief executive officer Gail Kelly, who is attending the forum at Davos, said social, environmental and economic responsibility was a key part of Westpac's culture.
"It [the ranking] is wonderful recognition of the work of our people to help create a sustainable future and deliver long-term value for our customers, employees, shareholders and the community," Ms Kelly said in a statement.