Eateries involved include Best Ugly Bagels, run by chef Al Brown, along with Al's Deli, upmarket Mount Eden restaurant Molten, and dessert restaurant Miann.
Brown said he was looking forward to UberEATS getting off the ground.
"We often serve up a platter of bagel sandwiches to share during our morning meetings and we love that UberEATS is going to make this a more convenient option for other local businesses," Brown said.
While not every item from each of the 70 restaurants will be available for delivery, an Uber spokesman said the majority of menus would be on offer.
Uber says it plans to "soon" expand the service into more parts of Auckland, although the company did not provide a specific timetable for this.
As part of its launch, UberEats is offering free delivery for customers' first three orders until the end of April.
"Auckland's food scene is thriving, from night time street food or artisan cafes and bistros to award-winning restaurants, locals are spoilt for choice when eating out. And now they are spoilt for choice when dining in," said UberEATS Australia & New Zealand general manager Simon Rossi.