The opening iD Emerging Designer Show and the runway Dunedin Designer Fashion shows will both be held in the theatre, on what will be the event's 20th anniversary.
iD Fashion Week runs from March 11 to 17, and will feature some new initiatives along with the new venue, which remain under wraps.
The Regent Theatre director Sarah Anderson said it was a perfect partnership.
''The Regent Theatre is a beautiful venue - it offers the grandeur of the past with modern facilities, making it the perfect backdrop for today's contemporary designers.''
iD Dunedin Fashion Week chairwoman Margo Barton said iD attendees would be wowed by both the surrounds and the fashion.
''The Regent Theatre will be utilised in innovative and unexpected ways as designers from across the globe descend on Dunedin to show their creations.''
The Regent Theatre partnership announcement comes as New Zealand Fashion Week is held in Auckland, including for the first time an iD Dunedin showcase on Saturday.
The sold-out show features archival pieces from the iD International Emerging Designer Awards, alongside a mash-up of Dunedin designers including NOM*d, Carlson, Mild-Red, Lapin and Darlene Gore.
A limited number of premium pre-release tickets for next year's shows will be available for sale from Ticket Direct from this Friday until Tuesday, September 4 using the pre-sale code id2019.
