Asda Surplus Swap enables suppliers to view product information online via a mobile app and then contact the supplier directly.
It was launched last week at Asda’s annual Sustain and Save Exchange Conference, which brought together more than 450 suppliers.
Vice president of corporate affairs Charlotte Cool said: "Our suppliers are extremely engaged in sharing best practice and ideas with each other - we’ve had of some really innovative partnerships created by our SSE Network, driving efficiencies and best practice, and wanted to go even further this year."
Asda's subsidiary IPL (International Procurement & Logistics) was the first supplier to sign up to the new app.
The initiative forms part of Asda’s commitment to double its food redistribution by 2020. It follows the retailer’s recent extension of the SSE scheme, which provides all food and drink suppliers with access to an online community to share information, best practice and to increase resource efficiency.
The scheme is estimated to have made suppliers savings and investments of more than £28m since its inception in 2013, with more than £2m reportedly saved last year alone.
The government-backed waste reduction charity WRAP estimates that around 45 per cent of UK food waste comes from the supply chain. Its head of food sustainability Dr David Moon said: "In food retail, Asda and other supermarkets are already making big strides in redistributing their own surplus, so I am delighted to see this innovative approach to helping suppliers make best use of surpluses elsewhere in the food chain."