The Olympia Theatre has been renamed the '3Olympia Theatre' following a sponsorship deal with telecoms firm Three Ireland.
The historic venue is to be renamed as part of the eight-year deal.
Three says the investment will provide support to the venue as it prepares for its re-opening, "ensuring the overall heritage and rich history of the building is preserved for years to come."
It is already the title sponsor of the 3Arena - as well some of the country's biggest festivals.
As part of the deal, the firm says Three customers will receive exclusive benefits to events at the theatre through the 3Plus app.
Elaine Carey, Chief Commercial Officer at Three Ireland, said: "We are extremely excited to announce our new partnership as title sponsor of 3Olympia Theatre.
"As Ireland's number one live music sponsor, we understand the importance that music and theatre play in the lives of our customers, and we want to ensure that they have access to the biggest and best experiences."
Caroline Downey, owner of the Olympia Theatre, adds: "The past 18 months has been difficult for the live entertainment industry and the investment of Three in this new partnership is more important than ever in supporting the venue to re-open its doors once again."
The historic Dame Street theatre has seen performances from world famous artists from David Bowie, Radiohead, Blur, Robbie Williams to Hozier, Dermot Kennedy, Lizzo, Adele and many more.