Another headliner will be announced in coming weeks.
Concert series A Summer's Day Live is promoted by Neptune entertainment, which is made up of Tauranga promoters Pato Alvarez and Mitch Lowe and Toby Burrows.
They are behind shows such as Bryan Adams and the UB40 featuring Ali Campbell New Zealand tour.
"A Summer's Day Live is about celebrating amazing music, reminiscing with friends and family and enjoying a premium outdoor event experience in a country as beautiful as New Zealand," Alvarez said.
"It's about creating a full afternoon of entertainment that flows into the night, often featuring multiple international artists from the golden era of music as well as some of New Zealand's legendary musicians," he said.
Alvarez said organisers had been working on securing this tour for about two years and he was excited to be bringing it to Tauranga.
"It is important to us to include Tauranga ... We love bringing events to our city.
"It's great to be able to help our local economy and bring some of the biggest names from around the world to Tauranga," Alvarez said.
A total of 12,000 tickets will go on sale for the Tauranga concert and Alvarez expects it to be a sellout.
Promoter Toby Burrows said Neptune Entertainment was excited to have secured such an iconic band to launch the series.
"We have been wanting to bring Toto to New Zealand for some time, and being able to place them in amazing outdoor venues in the heart of summer is the perfect fit."
A Summer's Day Live - featuring Toto and Dragon:
ASB Bay Park, Mount Maunganui - January 9
Church Road, Napier - January 10
TSB Bowl Of Brooklands, New Plymouth - January 11
Hagley Park, Christchurch - January 13
Tickets go on sale on August 13 at neptuneentertainment.co.nz