Sean Quinn of the Cavan-Fermanagh based Quinn Group has become Ireland's fourth billionaire.
The owner of Quinn Direct insurance, as well as several pubs, hotels and a cement manufacturing company, has seen his fortune soar by over 600m in the past 12 months.
He joins Tony O'Reilly, Dermot Desmond and Michael Flatley at the top of the Sunday Tribune Rich List.
There is also a "Young Rich List" this year, for those aged 30 and under. This list includes people such as Robbie Keane and Damien Duff, as well as Westlife and Colin Farrell.