Supermarkets have been slammed for selling Australia Day products that are made in China, Thailand and Taiwan.

Businessman Dick Smith has called on Woolworths, Coles and Aldi to stock locally made products, while the clothing workers' union has accused the supermarkets of ''cashing in'' on the patriotism of ordinary Australians.

Surprised: Richard and Tania Booker with their children (from left) Amalia, 2, Tamika, 7, Ashton, 5, and India-Rose, 3. Credit:Steve Lunam

Despite the brands being high-profile partners of the ''Australian Made'' campaign, Fairfax Media was unable to find a single Australian-made product among their Australia Day flags, T-shirts and other products.

Mr Smith said supermarkets would make more money by marketing Australia Day products as Australian-made.