Australian supermarket chains Woolworths and Coles are ranked among the world's top 20 retailers.
AAP reports Woolworths jumped two spots to 15th place while Coles' parent company Wesfarmers fell one place to 19th in a global ranking of the 250 biggest retailers by revenue.
Woolworths is the largest supermarket chain in Australia.
Deloitte Global Powers of Retailing report found it beat Amazon in terms of revenue, while Wesfarmers was ranked ahead of the Safeway supermarket chain in the United States.
The report again ranked Wal-Mart as the largest retailer in the world followed by UK supermarket operator Tesco and US wholesale group Costco which now has operations in Australia. French supermarket chain Carrefour was fourth.
Deloitte found the fastest growing company was Jumbo Groep, a Dutch supermarket chain which recorded a 115% jump in revenue growth.
Amazon doubled its revenue growth to cement itself as the largest online company, followed by Apple and Wal-Mart.
AAP reports 80% of the top 250 retailers posted an increase in retail with a total revenue of $US4.3 trillion in 2012.