Countdown and Mitre 10 are among 40 retailers in Auckland's Grey Lynn showing their support for a global trend banning single-use plastic bags.
Advocacy group Grey Lynn 2030 Waste Away say the shops will be encouraging their customers today to resuse bags and discouraging single use plastic bags in a bid to reduce waste.
It coincides with a plan for a petition calling for a ban of plastic bags in Auckland to be handed over to Mayor Len Brown today.
The petition, spearheaded by marine scientist Steph Borelle, wants to see the introduction of a bylaw that will phase out single use plastic bags from supermarkets and retailers over the coming years.
More than 3,300 people have signed the petition.
The movement to ban plastic bags is gaining traction across the world, with French MPs last month voting to ban single-use plastic bags in supermarkets by 2016.
Half of Australia's states and territories have already banned plastic bags, along with Rwanda and the Indian capital, Delhi.