Supermarket chain Foodstuffs and social enterprise Eat My Lunch have taken over the gap left by Fill Their Lunchbox after the Christchurch business was forced to close.
Fill Their Lunchbox has used the 'buy one, give one' model to provide free packed lunches to Canterbury schools. It closed its doors on August 9.
The new scheme is expected to be running again in next few weeks.
Eat My Lunch operates on a similar model in the North Island, and will use a Foodstuffs commercial kitchen to make the lunches in Christchurch.
Foodstuffs South Island CEO Steve Anderson says the groups will work together to find a long-term plan once the scheme is back up and running.
"Together with Eat My Lunch we will work to build on what Fill Their Lunchbox started, creating a stronger foundation and platform which allows Canterbury businesses and individuals to buy their own lunch, knowing another will be given to children in need," he said.
"Once they are up and running we'll work together to find ways to extend the programme in the South Island."
The company owns supermarkets New World, Pak'nSave and Four Square.
Eat My Lunch founder Lisa King said she's glad to be able to help fill the space left by Fill Their Lunchbox.
"As far as we're concerned, the children come first," she said.
"We're excited to be able to step in and pick up on the incredible work Fill Their Lunchbox has done in the Canterbury region."
Fill Their Lunchbox founder Ben Atkinson said he is pleased somebody is able to pick up where his company left off.
"We're all on the same page. We want every New Zealand child to be at their best to learn and grow," he said.
"They can't do that on empty tummies, so I'm excited that what we started will keep going and even grow thanks to Eat My Lunch and Foodstuffs South Island."