The event, which returns after a hiatus last year due to the Covid-19 restrictions, will fill the central city from 10am-4pm with thousands of bargain hunters browsing through hundreds of stalls.
A Dunedin City Council spokesperson said the event would look a little different this year, with no stalls in Bath St.
There will also be a range of live musical performances on George St and in the upper Octagon, and a kids zone on Princes St, near the Octagon, offering a science show and experiments from Otago Museum.
Southern Football will be running fun football activities on the grass in the upper Octagon, including a football juggling competition and other tricks and flicks.