The shows will mark an emotional return to live performance for the much loved Italian-Canadian crooner, who took a step back from the spotlight previous year after his son Noah was diagnosed with liver cancer.
Bublé announced in November 2016 that Noah, his 4-year-old son with Luisana Lopilato, was diagnosed with cancer.
Tickets from €89.50 including booking fee go on sale Friday 17 November at 9am at Ticketmaster.ie and all Ticketmaster outlets nationwide.
BST marks the Grammy Award-winning artist's return to the industry, and will be Buble's only United Kingdom gig of the year.
The star will top the bill at the BST festival in Hyde Park next July, which is now his only United Kingdom gig in 2018.
Sending well wishes to Noah and the Bublé family!
They have been updating fans on the youngster's recovery, and in April Lopilato told reporters the couple were "looking forward to thinking about the future, to seeing our children grow".
"And for those of you that haven't seen me live, well..."
The Haven't Met You Yet singer pulled out of hosting the annual Brit Awards ceremony soon after the announcement.