Genesis will play Dublin and Belfast in November as part of their first tour in 13 years.
Phil Collins, Mike Rutherford and Tony Banks will begin their The Last Domino? European tour at Dublin's 3Arena on Monday, November 16.
They will also play Belfast's SSE Arena on Thursday, November 19.
Tickets go on general sale this Monday, March 9, at 9:00am from usual outlets, with Dublin pre-sale from Friday, March 6, at 9:00am.
Collins, Rutherford and Banks shared news of their reunion tour on the Zoe Ball Breakfast Show on BBC Radio 2 on Wednesday.
It's official.@genesis_band are back together and heading out on tour later this year! 😊— BBC Radio 2 (@BBCRadio2) March 4, 2020
Hear the band chatting to @ZoeTheBall right now on @BBCSounds 🔊 https://t.co/TuXpxQoWkG pic.twitter.com/S9n2MDAEmK
Speculation about a reunion had increased after they were photographed together at a basketball game in New York in January.
The trio, all 69, will be joined for their upcoming shows by Collins' 18-year-old son Nicholas on drums and longtime collaborator Daryl Stuermer on guitar and bass.